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Construction Update | Jan. 18-27

Construction Updates - Fri, 01/17/2014 - 16:29

140114_1104_NB_TunnelTunneling is proceeding beneath 4th Street with TBM Big Alma. This TBM is expected to pass beneath Market Street around the end of January.

During the next 10 days, Central Subway work will continue at sites in SoMa, Union Square, Chinatown and North Beach. This post contains brief updates about what is happening in each neighborhood. For more detailed information, click here or on the links below. We also post construction, traffic detour and Muni impact information on our project Google Map.

Southern SoMa (Harrison to King/Berry): We plan to begin potholing for utilities on 4th Street between Bryant and King the week of Jan. 20. Potholing will commence on the east side of 4th Street between Bryant and Bluxome, proceeding at other locations along the block over the coming months. More details are in the Southern SoMa section. At the tunnel launch box on 4th Street between Harrison and Bryant, tunneling continues with both TBMs.

Northern SoMa (Market to Harrison): Construction is planned to resume on 4th between Market and Stevenson late next week, when the second TBM passes through the area. We plan to begin restoring 4th Street between Folsom and Harrison during the next two weeks, with the road expected to reopen in February. At 4th and Folsom, work to prepare for the Yerba Buena/Moscone Station continues. Work may include demolishing the roadway within the construction zone to prepare to construct underground station walls.

Union Square: Stockton Street between Ellis and Geary is closed to vehicular traffic to allow for construction of the Union Square/Market Street Station. Stockton between Ellis and O’Farrell will close next week as crews continue to install decorative barricades around the construction zone.

Chinatown: Work to prepare for the Chinatown Station continues within the future station site and on the adjacent section of Washington Street. Construction will be in progress this Saturday, January 18, within the station construction zone.

North Beach: Work on Columbus Avenue at Union Street is planned to start next week, continuing for approximately one month. More details in the North Beach section. Work will continue at 1455 Stockton and 1731-1741 Powell, within the property lines.

We appreciate your patience and support while we build this essential upgrade to San Francisco’s public transportation system.

Categories: Construction Updates

Construction Update | Jan. 11-20

Construction Updates - Fri, 01/10/2014 - 16:38

140108_1008_UMSThis week, we closed a block of Stockton Street to prepare to build the Union Square/Market Street Station. Crews are installing decorative barricades around the construction zone.

During the next 10 days, Central Subway work will continue at sites in SoMa, Union Square, Chinatown and North Beach. This post contains brief updates about what is happening in each neighborhood. For more detailed information, click here or on the links below. We also post construction, traffic detour and Muni impact information on our project Google Map.

Southern SoMa (Harrison to King/Berry): We expect to begin potholing for utilities on 4th Street between Bryant and King the week of Jan. 20. At the tunnel launch box on 4th Street between Harrison and Bryant, tunneling continues with both TBMs.

Northern SoMa (Market to Harrison): We plan to begin restoring 4th Street between Folsom and Harrison during the next two weeks. Until then, the traffic pattern may change to allow for underground sewer surveys. At 4th and Folsom, work to prepare for the Yerba Buena/Moscone Station continues. Work may include demolishing the roadway within the construction zone to prepare to construct underground station walls.

Union Square: Stockton Street between O’Farrell and Geary is closed to vehicular traffic to allow for construction of the Union Square/Market Street Station. Stockton between Ellis and O’Farrell may close next week as crews continue to install decorative barricades around the construction zone.

Chinatown: Work to prepare for the Chinatown Station continues within the future station site and on the adjacent section of Washington Street. On Jackson Street adjacent to Stockton Street, the contractor may be performing underground borings during the day.

North Beach: Near the intersection of Columbus Avenue and Stockton Street, crews will be performing underground sewer work for approximately one month, starting next week. This work does not involve excavation. The southbound bus stop on Stockton Street at Columbus will be relocated to Stockton and Vallejo during work hours (Monday to Friday, 9 a.m. to 3 p.m.). See the North Beach section for more details. Work on Columbus Avenue at Union Street is currently on hold. We will provide additional details about this work before it recommences. Work will continue at 1455 Stockton and 1731-1741 Powell, within the property lines.

We appreciate your patience and support while we build this essential upgrade to San Francisco’s public transportation system.

Categories: Construction Updates

Construction Update | January 4-13, 2014

Construction Updates - Fri, 01/03/2014 - 11:58
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At 1731-1741 Powell, we are constructing a retrieval shaft to remove two tunnel boring machines from the ground when tunneling is finished.

Next week traffic modifications on Stockton between Geary and Ellis streets near Union Square will recommence to accommodate construction of the Central Subway Union Square/Market Street station.

During the next 10 days, Central Subway work will continue at sites in SoMa, Union Square, Chinatown and North Beach. This section contains brief updates about what is happening in each neighborhood. For more detailed information, scroll down or click on the links below. We also post construction, traffic detour and Muni impact information on our project Google Map.

Southern SoMa (Harrison to King/Berry): We expect to begin potholing for utilities on 4th Street between Bryant and King in mid-January. At the tunnel launch box on 4th Street between Harrison and Bryant, tunneling continues with both TBMs.

Northern SoMa (Market to Harrison): We plan to begin restoring 4th Street between Folsom and Harrison during the next two weeks. Until then, the traffic pattern may change to allow for underground sewer surveys. At 4th and Folsom, work to prepare for the Yerba Buena/Moscone Station continues. Work may include demolishing the roadway within the construction zone to prepare to construct underground station walls.

Union Square: Next week, Stockton Street between Ellis and Geary will be closed to vehicular traffic to allow for construction of the Union Square/Market Street Station. The construction zone on Ellis Street will remain in place.

Chinatown: Work to prepare for the Chinatown Station continues within the future station site and on the adjacent section of Washington Street. On Jackson Street adjacent to Stockton Street, the contractor may be performing underground borings some nights next week.

North Beach: Work on Columbus Avenue at Union Street may resume next week. Work will continue at 1455 Stockton and 1731-1741 Powell, within the property lines.

We appreciate your patience and support while we build this essential upgrade to San Francisco’s public transportation system.

-The Central Subway Team

 

Categories: Construction Updates

Construction Update | Dec. 21-Jan. 6

Construction Updates - Fri, 12/20/2013 - 15:59

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In a parking lot at Stockton and Green, crews have built this underground shaft. From it, we will improve and stabilize ground conditions beneath Columbus Avenue during tunneling.

Due to the upcoming holidays, this update covers the next two weeks of Central Subway work. There will be no update next Friday, Dec. 27. Happy holidays from the Central Subway team!

During the next 17 days, Central Subway work will continue at sites in SoMa, Union Square, Chinatown and North Beach. This post contains brief updates about what is happening in each neighborhood. For more detailed information, click here or on the links below. We also post construction, traffic detour and Muni impact information on our project Google Map.

In honor of Christmas and New Year’s Day, no construction will take place on Dec. 25 or Jan. 1. Starting in the new year, work will recommence on Columbus Avenue in North Beach and on Stockton Street in Union Square.

Southern SoMa (Harrison to King/Berry): We now expect to begin potholing for utilities on 4th Street between Bryant and King in January. At the tunnel launch box on 4th Street between Harrison and Bryant, tunneling continues with both TBMs.

Northern SoMa (Market to Harrison): We plan to begin restoring 4th Street between Folsom and Harrison during the next two weeks. Until then, the traffic pattern may change to allow for underground sewer surveys. At 4th and Folsom, work to prepare for the Yerba Buena/Moscone Station continues. Work may include demolishing the roadway within the construction zone to prepare to construct underground station walls.

Union Square: Construction is now paused on Stockton Street, resuming in January. Stockton Street between Ellis and Geary is tentatively planned to close to vehicle traffic on Thursday, Jan. 2, to allow for construction of the Union Square/Market Street Station. The construction zone on Ellis Street will remain in place.

Chinatown: Work to prepare for the Chinatown Station continues within the future station site and on the adjacent section of Washington Street.

North Beach: On Columbus Avenue at Union Street, construction is planned to resume Thursday, Jan. 2. Work will continue at 1455 Stockton and 1731-1741 Powell, within the property lines. No construction is planned at 1731-1741 Powell from Christmas to New Year’s Day.

We appreciate your patience and support while we build this essential upgrade to San Francisco’s public transportation system.

Categories: Construction Updates

Construction Update | Dec. 14-23

Construction Updates - Fri, 12/13/2013 - 17:36

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Underground on 4th Street, two tunnels are now in construction. Here we see the entrances to both, beneath 4th and Harrison.

During the next 10 days, Central Subway work will continue at sites in SoMa, Union Square, Chinatown and North Beach. This post contains brief updates about what is happening in each neighborhood. For more detailed information, click here or on the links below. We also post construction, traffic detour and Muni impact information on our project Google Map.

Southern SoMa (Harrison to King/Berry): We now expect to begin potholing for utilities on 4th Street between Bryant and King in January. At the tunnel launch box on 4th Street between Harrison and Bryant, tunneling continues with both TBMs.

Northern SoMa (Market to Harrison): Next week the contractor will begin restoring the work zone on 4th Street between Folsom and Harrison. The traffic pattern may change to allow for underground sewer surveys, with construction in progress in the intersection of 4th and Harrison and, tentatively, 4th and Folsom. At 4th and Folsom, work to prepare for the Yerba Buena/Moscone Station continues. Work includes demolishing the roadway within the construction zone to prepare to construct underground station walls. This work will be noisy.

Union Square: Construction is now paused on Stockton Street, resuming in January. Work will continue on Ellis Street during December to allow for ground improvements related to tunneling.

Chinatown: Work to prepare for the Chinatown Station continues within the future station site and on the adjacent section of Washington Street. On Clay and Jackson streets adjacent to Stockton Street, the contractor may be performing underground borings some nights next week.

North Beach: Construction is now paused on Columbus Avenue, resuming in January. Work will continue on private property at 1455 Stockton and 1731-1741 Powell to ensure we are ready for the arrival of the first TBM in the spring.

We appreciate your patience and support while we build this essential upgrade to San Francisco’s public transportation system.

Categories: Construction Updates

Construction Update | December 7-16

Construction Updates - Fri, 12/06/2013 - 15:59

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Inside TBM Mom Chung, the new tunnel curves as it passes below Market Street. Our tunneling crews successfully and safely completed the crossing under BART last week.

We completed an important construction milestone last week as our tunneling contractor and TBM Mom Chung successfully and safely tunneled under Market Street and the existing BART and Muni tunnels. The TBM is now under Stockton Street in Union Square.

During the next 10 days, Central Subway work will continue at sites in SoMa, Union Square, Chinatown and North Beach. This post contains brief updates about what is happening in each neighborhood. For more detailed information, click here or on the links below. We also post construction, traffic detour and Muni impact information on our project Google Map.

Southern SoMa (Harrison to King/Berry): We expect to begin potholing for utilities on 4th Street between Bryant and King the week of Dec. 16. At the tunnel launch box on 4th Street between Harrison and Bryant, tunneling continues with both TBMs.

Northern SoMa (Market to Harrison): We have reestablished our work zone on 4th Street between Folsom and Harrison, in front of Pacific Bicycle. Work here involves improving ground conditions as the second TBM, Big Alma, passes underground. Work is currently paused at 4th and Stevenson, to resume when Big Alma reaches that area. At 4th and Folsom, we are building a covered walkway adjacent to the construction site on 4th Street and Clementina.

Union Square: Construction is now paused on Stockton Street, resuming in January. Work will continue on Ellis Street during December to allow for ground improvements related to tunneling.

Chinatown: Last week our crews closed a portion of Washington Street just west of Stockton Street to allow for utility work and the construction of underground Chinatown Station walls. Tentative: On Clay and Jackson streets adjacent to Stockton Street, the contractor may be performing underground borings some nights next week.

North Beach: Construction is now paused on Columbus Avenue, resuming in January. Work will continue on private property at 1455 Stockton and 1731-1741 Powell to ensure we are ready for the arrival of the first TBM in the spring. One morning next week, heavy equipment will be delivered to the construction site at the 1455 Stockton parking lot early in the morning, before regular working hours.

We appreciate your patience and support while we build this essential upgrade to San Francisco’s public transportation system.

Categories: Construction Updates

Time-lapse video: The first months of tunneling with TBM Mom Chung

Featured News - Wed, 12/04/2013 - 13:55

Using time-lapse cameras installed underground, we’ve condensed the first months of tunneling into this captivating two-minute video. In the video, Central Subway crews assemble tunnel boring machine (TBM) Mom Chung and drive the state-of-the-art tunnel builder north under 4th Street to build San Francisco’s first new subway line in decades. The video shows the TBM assembly process, installation of the first tunnel rings, removal of excavated ground spoils and other aspects of the complex tunneling operation.

By the end of the video, Mom Chung has tunneled from her launch box south of 4th and Harrison to 4th between Folsom and Howard. Since we captured this footage, she has mined much farther north, crossing successfully and safely under Market Street and the existing BART and Muni tunnels last weekend.

We thank our tunneling crews and tunneling contractor Barnard Impregilo Healy for their hard work to build the Central Subway, extending the Muni Metro T Third Line through SoMa, Union Square and Chinatown. Stay tuned for more time-lapse videos as construction proceeds.

Categories: News

TBM Big Alma Launches, Commencing Construction of Second Central Subway Tunnel

Featured News - Mon, 11/25/2013 - 12:01

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Tunnel boring machine Big Alma, shown here on the right, began tunneling under 4th Street. On the left is the entrance to the parallel tunnel being built by TBM Mom Chung.

There are now two 350-foot-long, 750-ton tunnel boring machines mining under 4th Street to construct the Central Subway’s pair of parallel tunnels. Our second TBM, named Big Alma, recently launched. She’s building the tunnel that northbound T Third Line trains will use when the Central Subway opens in 2019.

Over the coming months, Big Alma will travel north under 4th Street and Stockton Street, building tunnel at an average pace of 40 feet per day. Her tunnel will be just east of the tunnel that her twin, named Mom Chung, began building in July. Big Alma will move more slowly during the first 500 feet of tunneling, as Central Subway crews test the TBM and calibrate its many functions.

Big Alma is named for “Big Alma” de Bretteville Spreckels, a 19th century socialite and philanthropist who, among her many accomplishments, persuaded her first husband, sugar magnate Adolph B. Spreckels, to fund the design and construction of the California Palace of the Legion of Honor, at Land’s End in San Francisco. A model in her youth, Spreckels was the inspiration for the “Victory” statue atop the Dewey Monument in the center of Union Square.

The photos below show Big Alma the TBM during her assembly and launch. To learn more about Big Alma and her underground journey to build San Francisco’s first new subway line in decades, check out this press release from the SFMTA. You can also follow the machine on Twitter. She’s @BigAlmatheTBM.

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This section of Big Alma’s “shield,” the portion of the machine that puts in place the tunnel segments, was among the first to be lowered into the launch box.

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Known as the “cutter head,” this part is on the front of the machine, attached to the shield. It excavates the earth to make room for the new tunnel.

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The cutter head is lifted by a crane and lowered into the launch box.

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Underground, crews connect the cutter head to the shield.

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A welder welds together two sections of Big Alma’s shield.

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After the shield and cutter head were assembled, crews moved them to the northern end of the launch box, where tunneling begins.

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Crews work in the launch box, preparing to move Big Alma forward.

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In the launch box, Mom Chung is on the left, tunneling, and Big Alma is on the right, being assembled.

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Crews assemble the trailing gear of Big Alma. This 300-foot train of tunnel-building mechanisms performs a variety of important functions.

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Once assembled, the trailing gear stretches almost the full length of the launch box.

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A welder works on Big Alma’s shield in the weeks before launch.

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Tunnel segments are lowered into the launch box for installation by the TBMs.

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After Big Alma’s launch, a tunneling crewman walks out the back of the machine. We thank our crews for their hard work as they build San Francisco a new subway line.

Categories: News

Construction Update | November 23-December 9

Construction Updates - Fri, 11/22/2013 - 17:29

Due to the Thanksgiving holiday, this update covers the next two weeks. Our next update will be on Friday, Dec. 6. Happy Thanksgiving from the Central Subway team!

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Near Union Square, Stockton Street part of Stockton Street is now reopened. In this shot, crews finish the paving and traffic striping.

During the next 17 days, tunneling and tunneling preparatory work will continue in SoMa, Union Square and North Beach. Work to prepare for station construction is continuing in Chinatown and northern SoMa. In southern SoMa, preparatory construction is planned to start in December.

Next week, our first tunnel boring machine will cross under Market Street and the existing BART and Muni Metro tunnels. For more information on this major milestone, check out our blog.

This section provides overviews of current and upcoming construction impacts in each neighborhood. For full descriptions, click here or on the links below. We also post construction, traffic detour and Muni impact information on our project Google Map.

Southern SoMa (Harrison to King/Berry):

  • New: The start date of utility potholing has been pushed back. This work is now planned to begin the week of Dec. 2 on 4th Street between Bryant and King. Potholing involves drilling holes and trenches in the street to confirm the locations of existing utility lines. Work hours will usually be Monday to Friday, 7 a.m. to 5 p.m. More details are in the Southern SoMa section and in this construction notice.
  • Continuing: 4th Street between Harrison and Bryant may fully close some evenings and weekends. A closure is planned for tonight, starting at 8 p.m. This closure may continue through the weekend. Two lanes of traffic will remain open at all other times. On Bryant Street at 5th Street, the left lane and several parking spaces will remain closed.
  • Upcoming: Starting in 2014, additional construction will begin on 4th Street south of Bryant. Work includes relocation of several utility lines, construction of light-rail tracks and construction of an above-ground train station at 4th and Brannan. Impacts will vary during different phases of construction and on different blocks.

Northern SoMa (Market to Harrison)

  • New: Tentative: Perform sewer surveys on Folsom near the intersection with 4th Street.
  • Continuing: 4th Street between Market and Stevenson will be reduced to two traffic lanes so we can improve the ground as the tunnel boring machines pass below. The work zone is on the east side of the street, in front of Ross. A temporary taxi stand is in place just south of Stevenson.

    The two right lanes will remain closed on 4th Street between Howard and Folsom. South of Clementina, the sidewalk on the west side of the street is closed. To ensure safety, pedestrians should use the sidewalk on the other side of the street and cross the street at 4th and Howard.

    On 4th Street between Folsom and Harrison, the parking lane and one lane of traffic on the east side of the street will remain closed to allow for ground improvement work.

  • Upcoming: After completing preparatory work, we will begin building the Yerba Buena/Moscone Station in the coming months at 4th and Folsom.

Union Square

  • New: Stockton Street between Ellis and O’Farrell is now open to vehicle traffic. Stockton between O’Farrell and Geary is planned to reopen early next week. The blocks will remain open until January 2014.
  • Continuing: Ellis Street between Stockton and Powell will remain closed to westbound traffic. At this location, we will improve ground conditions as the TBMs pass below.
  • Upcoming: Construction of the Union Square/Market Street Station is starting next year. We will provide more information soon.

Chinatown:

  • New:  Washington Street between Stockton and Trenton may close to vehicles and pedestrians the week of Nov. 25. This closure will allow us to relocate utilities and build an underground station wall in this area. The closure is expected to last for approximately two years.
  • Continuing: The contractor continues performing utility work at and around Stockton and Washington. Expect parking impacts around construction zones.
  • Upcoming: Within the Chinatown Station site, we are performing archeological surveys and environmental assessments in preparation for station construction next year.

North Beach:

  • New: Utility construction will pause at and around the intersection of Columbus and Union from Thanksgiving to New Year’s Day. Next week, utility construction will be underway from Monday to Wednesday (11/25-27).
  • Continuing: At the Pagoda, parking and walkways may be impacted in front of the Pagoda Palace property. We plan to complete work at this location in 2014.

    In the Bank of America parking lot at 1455 Stockton, crews are constructing a shaft 20 feet in diameter and 27 feet deep, for use to improve ground conditions when the TBMs pass beneath Columbus Avenue. The parking lot will be closed but the banking drive-thru will remain open. Work hours are Monday to Friday, 7 a.m. to 3:30 p.m.

  • Upcoming: To ensure we are prepared for the arrival of the TBMs next year, work will continue during December on private property within 1731-1741 Powell Street and the parking lot of 1455 Stockton Street.

We appreciate your patience and support while we build this essential upgrade to San Francisco’s public transportation system.

Categories: Construction Updates

First Central Subway tunnel boring machine to pass under existing BART, Muni Metro tunnels next week

Featured News - Thu, 11/21/2013 - 14:17

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In the operating cabin of TBM Mom Chung, two TBM operators monitor tunneling conditions provided from a variety of state-of-the-art instruments.

Next week our first tunnel boring machine, Mom Chung, will pass beneath Market Street and the existing BART and Muni Metro tunnels, crossing from SoMa and into Union Square. The tunnel, one of two being constructed as part of the Central Subway Project, will allow T Third Line trains to travel quickly beneath 4th Street and Stockton Street when the Central Subway opens, cutting travel times by more than half along this busy corridor.

The SFMTA has worked in close coordination with BART and an independent panel of top tunneling experts to plan and carry out this key phase of tunnel construction. To pass beneath Market Street and the existing transit tunnels, TBM Mom Chung will turn slightly left beneath 4th Street just south of Market Street and travel partially under 801 Market Street, home to Old Navy. The machine will then veer right to head north under Market Street and then Stockton Street. The new T Third Line tunnels will be about 10 feet below the existing BART tunnels.

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This graphic shows the path the Central Subway TBMs will take when they pass under Market Street. The first TBM, Mom Chung, is expected to begin this crossing on Monday.

Starting yesterday, Mom Chung is in operation 24 hours a day to build the approximately 425 feet of new tunnel beneath Old Navy and the Market Street tunnels. Mom Chung is expected to begin crossing beneath the Market Street tunnels on Monday, Nov. 25. The tunneling methods used during this key crossing will be the same that are in use along the rest of the tunneling route. As the TBM moves forward, it installs tunnel segments within the section known as the “shield,” a 20-foot-diameter cylinder at the front of the machine. The shield and the newly installed tunnel lining create a watertight barrier that holds the ground outside in place. Using these methods, tunneling contractor Barnard Impregilo Healy (BIH) has constructed more than 2,100 feet of tunnel under 4th Street so far.

“We’re thrilled at the progress our tunneling contractor and tunnel boring machines are making to build this essential new subway line for San Francisco,” said SFMTA Director of Transportation Edward D. Reiskin. “We are using state-of-the-art technology and the country’s top expertise to ensure the entire tunneling process safeguards the city as well as the region’s critically important transportation infrastructure. We thank BART for the excellent partnership in this process.”

tunnel

With the help of TBM Mom Chung, Central Subway crews have now built a new subway tunnel under 4th Street from Harrison and Stevenson.

131120_1074_launchboxUnderground, two Central Subway tunnels are now under construction. The tunnel on the left will pass beneath BART and Market Street in the coming days.

In preparation for the crossing, the contractor has injected a ground-stabilizing grout underground near the BART tunnels, accessing this subterranean area via a deep shaft they constructed on Ellis Street. They will inject additional grout as needed while Mom Chung is mining below BART.

About 150 monitoring devices installed in the Powell Street Station and on neighboring buildings will provide live data feeds about tunneling conditions to web applications that the SFMTA, the contractor, BART and an independent panel of tunneling experts can view at all times. Similar devices are installed along the entire tunneling path, from 4th and Bryant in SoMa to Columbus and Powell in North Beach. The readings of these instruments and others on the TBM itself allow the tunneling contractor to respond rapidly to ground conditions around the machine as it moves forward.

BART may run at lower speeds between Powell and Montgomery stations while tunneling is in progress under BART. Please visit BART on the web at www.bart.gov/alerts or call 511 to get up-to-date service information.

For more about this major tunneling milestone, check out this press release from the SFMTA.

Categories: News

Construction Update | Nov. 16-25

Construction Updates - Fri, 11/15/2013 - 17:16

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In the new tunnel, two crewmen watch as a cart approaches, carrying with it tunnel segments for TBM Mom Chung to install.

During the next 10 days, tunneling and tunneling preparatory work will continue in SoMa, Union Square and North Beach. Work to prepare for station construction is continuing in Chinatown and northern SoMa. In southern SoMa, preparatory construction is planned to start next week.

This section provides overviews of current and upcoming construction impacts in each neighborhood. For full descriptions, click here or on the links below.

Southern SoMa (Harrison to King/Berry):

  • New: We plan to begin potholing for utilities next week on 4th Street between Bryant and King. This involves drilling holes and trenches in the street to confirm the locations of existing utility lines. Work hours will usually be Monday to Friday, 7 a.m. to 5 p.m. Next week, the potholing crews will be on the eastern side of the street and the eastern sidewalk. More details are in the Southern SoMa section and in this construction notice.
  • Continuing: 4th Street between Harrison and Bryant may fully close some evenings and weekends. Two lanes of traffic will remain open at all other times. On Bryant Street at 5th Street, the left lane and several parking spaces will remain closed.
  • Upcoming: Starting in 2014, additional construction will begin on 4th Street south of Bryant. Work includes relocation of several utility lines, construction of light-rail tracks and construction of an above-ground train station at 4th and Brannan. Impacts will vary during different phases of construction and on different blocks.

Northern SoMa (Market to Harrison)

  • New: Tentative: Perform sewer surveys on Folsom near the intersection with 4th Street.
  • Continuing: 4th Street between Market and Stevenson will be reduced to two traffic lanes so we can improve the ground as the tunnel boring machines pass below. The work zone is on the east side of the street, in front of Ross. A temporary taxi stand is in place just south of Stevenson.

    The two right lanes will remain closed on 4th Street between Howard and Folsom. South of Clementina, the sidewalk on the west side of the street is closed. To ensure safety, pedestrians should use the sidewalk on the other side of the street and cross the street at 4th and Howard.

    On 4th Street between Folsom and Harrison, the parking lane and one lane of traffic on the east side of the street will remain closed to allow for ground improvement work.

  • Upcoming: After completing preparatory work, we will begin building the Yerba Buena/Moscone Station in the coming months at 4th and Folsom.

Union Square

  • New: We have completed construction of underground walls on Stockton Street and will be restoring the roadway over the next weeks. We expect to reopen Stockton Street next Thursday, Nov. 21.
  • Continuing: Ellis Street between Stockton and Powell will remain closed to westbound traffic.
  • Upcoming: Construction of the Union Square/Market Street Station is starting next year. We will provide more information soon.

Chinatown:

  • New:  Washington Street between Stockton and Trenton may close to vehicles and pedestrians the week of Nov. 18. This closure will allow us to relocate utilities and build an underground station wall in this area. The closure is expected to last for approximately two years.

    On Stockton Street, the sidewalk in front of 933-949 Stockton is scheduled to reopen Monday, Nov. 18.

  • Continuing: Building demolition at 933-949 Stockton Street is now complete. The contractor continues performing utility work on Stockton at Washington, and on Stockton between Sacramento and Washington. Expect parking impacts around construction zones.
  • Upcoming: Within the Chinatown Station site, we are performing archeological surveys and environmental assessments in preparation for station construction next year.

North Beach:

  • New: On Saturday, November 16, construction will not take place within the Pagoda as previously planned. However, the contractor will be on site performing maintenance on their machine.

    Starting Monday, Nov. 18, construction hours at the Pagoda will be extended. Hours will usually be Monday to Saturday, 6 a.m. to 11 p.m. The longer hours are required to ensure this work is complete in time for the TBMs to arrive at the site.

  • Continuing: At the Pagoda, parking and walkways may be impacted in front of the Pagoda Palace property.

    Utility work will continue at and near the intersection of Columbus Ave and Union Street. This work will complete the utility relocation started last year. More details are included in the North Beach section and in this flier.

    In the Bank of America parking lot at 1455 Stockton, crews are constructing a shaft 20 feet in diameter and 27 feet deep, for use to improve ground conditions when the TBMs pass beneath Columbus Avenue. The parking lot will be closed but the banking drive-thru will remain open. Work hours are Monday to Friday, 7 a.m. to 3:30 p.m.

  • Upcoming: During the holiday season (Thanksgiving to New Year’s Day), utility construction will pause at and around the intersection of Columbus and Union. The contractor will start this work again in January 2014. To ensure we are prepared for the arrival of the TBMs next year, work will continue through the holidays on private property within 1731-1741 Powell Street and the parking lot of 1455 Stockton Street.

We appreciate your patience and support while we build this essential upgrade to San Francisco’s public transportation system.

Categories: Construction Updates

Construction Update | November 9-18

Construction Updates - Fri, 11/08/2013 - 16:50

131106_1007_UMSWe have completed the current phase of work on Stockton Street and are restoring the construction zone. Stockton will reopen to traffic in time for the holidays.

During the next 10 days, tunneling and tunneling preparatory work will continue in SoMa, Union Square and North Beach. Work to prepare for station construction is continuing in Chinatown and northern SoMa. In southern SoMa, preparatory construction is planned to start the week of Nov. 18 (details below).

This section provides overviews of current and upcoming construction impacts in each neighborhood. For full descriptions, click here or on the links below. We also post construction, traffic detour and Muni impact information on our project Google Map.

Southern SoMa (Harrison to King/Berry):

  • New: We plan to begin potholing for utilities the week of November 18, on 4th Street between Bryant and King. This involves drilling holes and trenches in the street to confirm the locations of existing utility lines. Work hours will usually be Monday to Friday, 7 a.m. to 5 p.m. More details are in the Southern SoMa section and in this construction notice.
  • Continuing: 4th Street between Harrison and Bryant may fully close some evenings and weekends. Two lanes of traffic will remain open at all other times. On Bryant Street at 5th Street, the left lane and several parking spaces will remain closed. One lane of the I-80 off ramp at 4th and Bryant may be closed at night to allow for utility work.
  • Upcoming: Starting in 2014, additional construction will begin on 4th Street south of Bryant. Work includes relocation of several utility lines, construction of light-rail tracks and construction of an above-ground train station at 4th and Brannan. Impacts will vary during different phases of construction and on different blocks.

Northern SoMa (Market to Harrison)

  • New: None
  • Continuing: The two right lanes will remain closed on 4th Street between Howard and Folsom. South of Clementina, the sidewalk on the west side of the street is closed. To ensure safety, pedestrians should use the sidewalk on the other side of the street and cross the street at 4th and Howard.

    On 4th Street between Folsom and Harrison, the parking lane and one lane of traffic on the east side of the street will remain closed to allow for ground improvement work.

    4th Street between Market and Stevenson is reduced to two traffic lanes so we can improve the ground as the tunnel boring machines pass below. The work zone is on the east side of the street, in front of Ross. A temporary taxi stand is in place just south of Stevenson.

  • Upcoming: After completing preparatory work, we will begin building the Yerba Buena/Moscone Station in the coming months.

Union Square

  • New: We have completed construction of underground walls on Stockton Street and will be restoring the roadway over the next weeks. We expect to reopen Stockton Street the week of November 18.
  • Continuing: Stockton Street between Geary and Ellis will remain closed to vehicle traffic next week. Ellis Street between Stockton and Powell will remain closed to westbound traffic.
  • Upcoming: Construction of the Union Square/Market Street Station is starting next year. We will provide more information soon.

Chinatown:

  • New:  Washington Street between Stockton and Trenton may close to vehicles and pedestrians the week of Nov. 18. This closure will allow us to relocate utilities and build an underground station wall in this area. The closure is expected to last for approximately two years.

    On Stockton Street, the sidewalk in front of 933-949 Stockton is planned to reopen next week.

  • Continuing: Building demolition at 933-949 Stockton Street is nearing completion. The contractor continues performing utility work on Stockton at Washington, and on Stockton between Sacramento and Washington. Expect parking impacts around construction zones. One lane of Washington just west of Stockton will remain closed.
  • Upcoming: Within the Chinatown Station site, we are performing archeological surveys and environmental assessments in preparation for station preparation next year.

North Beach:

  • New: On Saturday, November 9 and 16, construction will take place within the Pagoda Palace property. Work hours on the 9th are 7 a.m. to 3:30 p.m. Work hours on the 16th are 7 a.m. to 7 p.m.

    For some weeknights next week, the contractor will install monitoring equipment on Powell, Columbus and Union near Marini Park. A small work zone will be set up around the contractor’s truck, and traffic will be diverted around it. Work hours will be 7:30pm to 5am. Please contact Andrea Baker at 415-351-8427 with any questions about the specific schedule.

  • Continuing: At the Pagoda, construction hours will usually be Monday to Friday, 7 a.m. to 3:30 p.m., though later work hours (until 7 p.m.) and Saturday work may be required. Parking and walkways may be impacted in front of the Pagoda Palace property.

    Utility work will continue at and near the intersection of Columbus Ave and Union Street. This work will complete the utility relocation started last year. More details are included in the North Beach section and in this flier.

    In the Bank of America parking lot at 1455 Stockton, crews are constructing a shaft 20 feet in diameter and 27 feet deep, for use to improve ground conditions when the TBMs pass beneath Columbus Avenue. The parking lot will be closed but the banking drive-thru will remain open. Work hours are Monday to Friday, 7 a.m. to 3:30 p.m.

  • Upcoming: The tunnel boring machines arrive in North Beach in spring 2014. After tunneling beneath Columbus Avenue, they will arrive at the old Pagoda Palace site for removal from the area.

We appreciate your patience and support while we build this essential upgrade to San Francisco’s public transportation system.

-The Central Subway Team

Categories: Construction Updates

Construction Update | November 2-11

Construction Updates - Fri, 11/01/2013 - 17:45

131029_1019_LaunchBox

Beneath 4th Street, segments of the new subway tunnels are delivered underground. Our first tunnel boring machine, Mom Chung, has now built about 1,400 feet of tunnel.

During the next 10 days, tunneling and tunneling preparatory work will continue in SoMa, Union Square and North Beach. Work to prepare for station construction is continuing in Chinatown and northern SoMa. In southern SoMa, preparatory construction is planned to start the week of Nov. 11 (details below).

This section provides overviews of current and upcoming construction impacts in each neighborhood. For full descriptions, click here or on the links below. We also post construction, traffic detour and Muni impact information on our project Google Map.

Southern SoMa (Harrison to King/Berry):

  • New: We plan to begin potholing for utilities the week of November 11, on 4th Street between Bryant and Berry. This involves drilling small holes and trenches in the street to confirm the locations of existing utility lines. Potholing will start on 4th Street between Bryant and Brannan, on the east side of the street. Work hours will usually be Monday to Friday, 7 a.m. to 5 p.m. More details are in the Southern SoMa section.
  • Continuing: 4th Street between Harrison and Bryant may fully close some evenings and weekends. Two lanes of traffic will remain open at all other times. On Bryant Street at 5th Street, the left lane and several parking spaces will remain closed. One lane of the I-80 off ramp at 4th and Bryant may be closed at night to allow for utility work.
  • Upcoming: Starting in 2014, additional construction will begin on 4th Street south of Bryant. Work includes relocation of a sewer line and a storm drain, construction of light-rail tracks and construction of an above-ground train station at 4th and Brannan streets. Impacts will vary during different phases of construction and on different blocks. We will provide more information soon, and in a community meeting on November 7.

Northern SoMa (Market to Harrison)

  • New: Starting Monday, November 4, 4th Street between Market and Stevenson will be reduced to two traffic lanes so we can improve the ground as the tunnel boring machines pass below. The work zone will be on the east side of the street, in front of Ross. The temporary taxi stand that was in place in the previous phase of work will be reestablished.
  • Continuing: The two right lanes are now closed on 4th Street between Howard and Folsom. South of Clementina, the sidewalk on the west side of the street is closed. To ensure safety, pedestrians should use the sidewalk on the other side of the street and cross the street at 4th and Howard. On 4th Street between Folsom and Harrison, the parking lane and one lane of traffic on the east side of the street will remain closed to allow for ground improvement work.
  • Upcoming: After completing preparatory work, we will begin building the Yerba Buena/Moscone Station.

Union Square

  • New: We have completed construction of underground walls on Stockton Street and will be restoring the roadway over the next weeks. We expect to reopen Stockton Street the week of November 11.
  • Continuing: Stockton Street between Geary and Ellis will remain closed to vehicle traffic next week. Ellis Street between Stockton and Powell will remain closed to westbound traffic.
  • Upcoming: Construction of the Union Square/Market Street Station is starting next year. We will provide more information soon.

Chinatown:

  • New:  Next week, water line work will be in progress in the intersection of Washington and Stockton. Traffic will be routed around the work zone.Tentative: Washington Street between Stockton and Trenton may close to vehicles and pedestrians late next week (details below).
  • Continuing: We are demolishing the building at 933-949 Stockton Street and performing utility work on Stockton at Washington. Expect parking impacts around construction zones. One lane of Washington Street will remain closed just west of Stockton Street.
  • Upcoming: Washington Street between Stockton and Trenton will close to vehicles and pedestrians during the first phase of Chinatown Station construction. This closure is expected to last approximately one year. This closure is planned to start in November and is tentatively planned for late next week.

North Beach:

  • New: In the Bank of America parking lot at 1455 Stockton, crews will begin constructing a shaft 20 feet in diameter and 27 feet deep, for use to improve ground conditions when the TBMs pass beneath Columbus Avenue. This work starts Monday, November 4, and will last for about six months. The parking lot will be closed but the banking drive-thru will remain open. Work hours are Monday to Friday, 7 a.m. to 3:30 p.m. We do not anticipate impacts to transit, roadways or pedestrian walkways as a result of this work.
  • Continuing: At the Pagoda, construction hours will usually be Monday to Friday, 7 a.m. to 3:30 p.m., though later work hours (until 7 p.m.) and Saturday work may be required. Parking and walkways may be impacted in front of the Pagoda Palace property.Utility work will continue at and near the intersection of Columbus Ave and Union Street. This work will complete the utility relocation started last year. More details are included in the North Beach section and in this flier.
  • Upcoming: The tunnel boring machines arrive in North Beach in spring 2014. After tunneling beneath Columbus Avenue, they will arrive at the old Pagoda Palace site for removal from the area.

We appreciate your patience and support while we build this essential upgrade to San Francisco’s public transportation system.

Categories: Construction Updates

Construction Update | October 26-November 4

Construction Updates - Fri, 10/25/2013 - 17:11

131024_1000_UMS

On Stockton Street, we are beginning to restore the construction zone. We plan to reopen the road to traffic in November for the holiday season.

During the next 10 days, tunneling and tunneling preparatory work will continue in SoMa, Union Square and North Beach. Work to prepare for station construction is continuing in Chinatown and northern SoMa.

This section provides overviews of current and upcoming construction impacts in each neighborhood. For full descriptions, click here or on the links below. We also post construction, traffic detour and Muni impact information on our project Google Map.

Southern SoMa (Harrison to King/Berry):

  • New: None
  • Continuing: 4th Street between Harrison and Bryant may fully close some evenings and weekends. Two lanes of traffic will remain open at all other times. On Bryant Street at 5th Street, the left lane and several parking spaces will remain closed. One lane of the I-80 off ramp at 4th and Bryant may be closed at night to allow for utility work.
  • Upcoming: We expect to begin potholing for utilities on 4th Street between Bryant and King in the coming weeks. This involves drilling small holes and trenches in the street to confirm the locations of existing utility lines. A community meeting will be held in November to inform neighbors about this and other upcoming work. Look out for more information soon.

Northern SoMa (Market to Harrison)

  • New: Tentative: Next week, partial temporary lane closures may be in effect on Folsom Street near the intersection with 4th Street to allow for sewer surveys. This work may take place at night.
  • Continuing: The two right lanes are now closed on 4th Street between Howard and Folsom. South of Clementina, the sidewalk on the west side of the street is closed. To ensure safety, pedestrians should use the sidewalk on the other side of the street and cross the street at 4th and Howard. On 4th Street between Folsom and Harrison, the parking lane and one lane of traffic on the east side of the street will remain closed to allow for ground improvement work.
  • Upcoming: 4th Street between Market and Stevenson will be reduced to three traffic lanes so we can improve the ground as the tunnel boring machines pass below. The work zone will be on the east side of the street, in front of Ross. Expected start: mid-November.

Union Square

  • New: None
  • Continuing: Stockton Street between Geary and Ellis will remain closed to vehicle traffic. Ellis Street between Stockton and Powell will remain closed to westbound traffic.
  • Upcoming: Next month we will restore the area and reopen Stockton Street to traffic.

Chinatown:

  • New: Starting Monday, October 28, sewer line work on Stockton between Sacramento and Clay will impact sidewalks and the parking lane for about three days. Sidewalks will remain open but may be narrowed. Work hours are 7 a.m. to 3:30 p.m. On October 30 or 31, nighttime sewer work will take place on the same block. Work will start at 7 p.m. and last up to 15 hours.
  • Continuing: We are demolishing the building at 933-949 Stockton Street and performing utility work on Stockton between Sacramento and Jackson. Temporary partial lane closures will be required along Stockton Street as utility work progresses. Parking will also be impacted, and temporary bus stop relocations will be required. We will post notification of temporary bus stop locations at the impacted stops. The sidewalk adjacent to 933-949 Stockton will remain closed to pedestrians at least through the middle of next week. One lane of Washington Street will remain closed just west of Stockton Street.
  • Upcoming: Construction of the Chinatown Station. More details coming soon.

North Beach:

  • New: On Monday, October 28, we will begin work at and near the intersection of Columbus Ave and Union Street. This work will complete the utility relocation started last year. More details are included in the North Beach section and in this flier. Early in the morning on October 28, large equipment will be delivered to the Pagoda Palace site. This work will start around 3 a.m. and finish by 6 a.m. Traffic on Powell Street may be impacted. A pedestrian monitor will be on site to direct pedestrian traffic.
  • Continuing: At the Pagoda, construction hours will usually be Monday to Friday, 7 a.m. to 3:30 p.m., though later work hours (until 7 p.m.) and Saturday work may be required. Parking and walkways may be impacted in front of the Pagoda Palace property.
  • Upcoming: In the Bank of America parking lot at 1455 Stockton, crews will begin constructing a shaft 20 feet in diameter and 27 feet deep, for use to improve ground conditions when the TBMs pass beneath Columbus Avenue. This work is planned to start Monday, November 4, and last for about six months. The parking lot will be closed but the banking drive-thru will remain open. We do not anticipate impacts to transit, roadways or pedestrian walkways as a result of this work.

We appreciate your patience and support while we build this essential upgrade to San Francisco’s public transportation system.

Categories: Construction Updates

Construction Update | October 19-28

Construction Updates - Fri, 10/18/2013 - 17:44

131016_1045_YBM

This week we demolished the gas station that stood at the future Yerba Buena/Moscone Station site. Seen from above, the site is now graded. In a few years, the station entrance will stand here.

During the next 10 days, tunneling and tunneling preparatory work will continue in SoMa, Union Square and North Beach. Work to prepare for station construction is continuing in Chinatown and northern SoMa.

For descriptions of construction impacts in each neighborhood, click here or on the links below. We also post construction, traffic detour and Muni impact information on our project Google Map.

Construction impacts are planned to change at these locations by October 28:

  • Chinatown: In Chinatown, we are demolishing the building at 933-949 Stockton Street and performing utility work on Stockton between Sacramento and Jackson. Temporary partial street closures will be required along Stockton Street as utility work progresses. Parking will also be impacted, and temporary bus stop relocations will be required. We will post notification of temporary bus stop locations. The sidewalk adjacent to 933-949 Stockton will remain closed to pedestrians, and one lane of Washington Street may be closed just west of Stockton Street. Night work may be required.
  • Northern SoMa (Market to Harrison):  One lane of 4th Street between Mission and Howard will be closed until early next week to allow for installation of monitoring equipment. On 4th Street between Howard and Folsom, the two right lanes will close to traffic starting the evening of October 18 as we begin preparatory work for station construction in the roadway To set up this traffic pattern, work hours tonight are 8 p.m. to 6 a.m. The sidewalk south of Clementina will close to pedestrians during this phase of construction. On 4th Street between Folsom and Harrison, the parking lane and one lane of traffic on the east side of the street will remain closed to allow for ground improvement work.
  • North Beach: On Monday, October 28, we will begin work at and near the intersection of Columbus Ave and Union Street. This work will complete the utility relocation started last year. More details are included in the North Beach section and in this flier.Early in the morning on Tuesday, October 22, we will deliver a large crane to the Pagoda Palace site. This should take about an hour, starting around 4 a.m. Traffic on Powell Street may be impacted. A pedestrian monitor will be on site to direct pedestrian traffic.

    At other times at the Pagoda, we will continue to prepare for construction of a retrieval shaft to remove two tunnel boring machines. Construction hours will usually be Monday to Friday, 7 a.m. to 3:30 p.m., though later work hours (until 7 p.m.) and Saturday work may be required. Parking and walkways may be impacted in front of the Pagoda Palace property.

At these locations, current construction impacts are planned to continue until October 28:

  • Southern SoMa (Harrison to King/Berry): 4th Street between Harrison and Bryant may fully close some evenings and weekends to allow for the installation of tunneling components and piping. Two lanes of traffic will remain open at all other times. Contact us at central.subway@sfmta.com if you have questions about the closure schedule. On Bryant Street at 5th Street, the left lane and several parking spaces will remain closed. One lane of the I-80 off ramp at 4th and Bryant may be closed at night to allow for utility work.
  • Union Square: Stockton Street between Geary and Ellis will remain closed to vehicle traffic. Ellis Street between Stockton and Powell will remain closed to westbound traffic.

We appreciate your patience and support while we build this essential upgrade to San Francisco’s public transportation system.

-The Central Subway Team

Categories: Construction Updates

Construction Update | October 12-21

Construction Updates - Fri, 10/11/2013 - 17:09

130908_1004_CTS

Central Subway construction has started in Chinatown. The first work involves relocating and improving utility lines and demolishing the building at the future station site.

During the next 10 days, tunneling and tunneling preparatory work will continue in SoMa, Union Square and North Beach. Work to prepare for station construction is continuing in Chinatown and northern SoMa.

For descriptions of construction impacts in each neighborhood, click here or on the links below. We also post construction, traffic detour and Muni impact information on our project Google Map.

Construction impacts are planned to change at these locations by October 21:

  • Chinatown: In Chinatown, work to prepare for station construction will continue in and around 933-949 Stockton. One lane of Washington Street may be closed just west of Stockton Street. Several parking spaces will be closed near the intersection of Stockton and Washington and adjacent to the future Chinatown Station site (933-949 Stockton). The sidewalk adjacent to the building will remain closed to pedestrians.
  • North Beach: At the Pagoda Palace site, we are continuing to prepare for construction of a retrieval shaft to remove two tunnel boring machines. Construction hours will usually be Monday to Friday, 7 a.m. to 3:30 p.m., though later work hours (until 7 p.m.) and Saturday work may be required. Parking and walkways may be impacted in front of the Pagoda Palace property.

At these locations, current construction impacts are planned to continue until October 21:

  • Southern SoMa (Harrison to King/Berry): 4th Street between Harrison and Bryant may fully close some evenings and weekends to allow for the installation of tunneling components and piping. Two lanes of traffic will remain open at all other times. Contact us at central.subway@sfmta.com if you have questions about the closure schedule. On Bryant Street at 5th Street, the left lane and several parking spaces will remain closed. One lane of the I-80 off ramp at 4th and Bryant may be closed at night to allow for utility work.
  • Northern SoMa (Market to Harrison):  On 4th Street between Folsom and Harrison, the parking lane and one lane of traffic on the east side of the street will remain closed to allow for ground improvement work. On 4th Street between Howard and Folsom, one lane will remain closed to traffic south of Clementina. Demolition of the 76 gas station is in progress.
  • Union Square: Stockton Street between Geary and Ellis will remain closed to vehicle traffic. Ellis Street between Stockton and Powell will remain closed to westbound traffic.

We appreciate your patience and support while we build this essential upgrade to San Francisco’s public transportation system.

Categories: Construction Updates

Construction Update | October 5-14

Construction Updates - Fri, 10/04/2013 - 16:49

131002_1125_SB_Tunnel

Tunnel construction continues beneath 4th Street with our first tunneling machine, Mom Chung. Our second tunneling machine, Big Alma, launches in the coming weeks.

During the next 10 days, tunneling and tunneling preparatory work will continue in SoMa, Union Square and North Beach. Work to prepare for station construction is continuing in Chinatown and northern SoMa.

For descriptions of construction impacts in each neighborhood, click here or on the links below. We also post construction, traffic detour and Muni impact information on our project Google Map.

Construction impacts are planned to change at these locations by October 14:

  • Northern SoMa (Market to Harrison):  All lanes are now open to traffic on 4th Street between Market and Stevenson. On 4th Street between Folsom and Harrison, the parking lane and one lane of traffic on the east side of the street will remain closed to allow for ground improvement work. On 4th Street between Howard and Folsom, one lane will remain closed to traffic south of Clementina. Demolition of the 76 gas station in progress.
  • Chinatown: In Chinatown, work to prepare for station construction will continue. The turn lane from Stockton Street onto Washington Street may be closed for one day next week. Several parking spaces will be closed near the intersection of Stockton and Washington and adjacent to the future Chinatown Station site 9933-949 Stockton). The sidewalk adjacent to the building will remain closed to pedestrians.

At these locations, current construction impacts are planned to continue until
October 14:

  • Southern SoMa (Harrison to King/Berry): 4th Street between Harrison and Bryant may fully close some evenings and weekends to allow for the installation of tunneling components and piping. Two lanes of traffic will remain open at all other times. Contact us at central.subway@sfmta.com if you have questions about the closure schedule. On Bryant Street at 5th Street, the left lane and several parking spaces will remain closed. One lane of the I-80 off ramp at 4th and Bryant may be closed at times to allow for utility work.
  • Union Square: Stockton Street between Geary and Ellis will remain closed to vehicle traffic. Ellis Street between Stockton and Powell will remain closed to westbound traffic.
  • North Beach: Construction of a retrieval shaft, to be used to remove two tunnel boring machines, is commencing at the Pagoda Palace site. Crews are installing monitoring instruments and building a sound wall that will buffer construction noise. Construction hours are Monday to Saturday, 7 a.m. to 7 p.m. All local roadways will remain open. Parking and walkways may be impacted in front of the Pagoda Palace property.

We appreciate your patience and support while we build this essential upgrade to San Francisco’s public transportation system.

Categories: Construction Updates

Now starting: Construction of Central Subway stations, tracks and operating systems

Featured News - Wed, 10/02/2013 - 15:56

Building-with-Wrap

This building in Chinatown will be demolished soon to make way for the Central Subway Chinatown Station.

Last month, we started the first construction activities to build the Central Subway’s stations, tracks and operating systems. This work will extend the Muni Metro T Third Line underground to improve public transit in some of San Francisco’s busiest neighborhoods. Once in operation, the Central Subway will cut travel times in half along congested Stockton Street and 4th Street while enhancing connections to BART, Muni Metro and Caltrain.

The first construction activities are preparatory in nature and include installing monitoring devices, putting up fences and removing hazardous materials at future subway station sites in Chinatown and SoMa. After completing this work, contractor Tutor Perini will demolish the existing structures at the sites of the future Chinatown Station (933-949 Stockton Street) and Yerba Buena/Moscone Station (260-266 4th Street). Station construction will follow.

At other locations, construction will commence later this year or in 2014. Construction timelines and impacts will vary significantly at the various project sites (more details below). Construction is expected to finish in 2018.

UMS Rendering - SE view - Sept 2012

Over the next few years, we will build the Union Square/Market Street Station on Stockton Street. This rendering shows the station entrance that will be built in Union Square Plaza, at the corner of Stockton and Geary.

The construction is part of SFMTA Contract 1300 (Stations, Track and Systems), awarded to Tutor Perini, a leading California-based construction firm, earlier this year. As part of this contract, Tutor Perini will construct three subway stations, one surface-level station, 1.7 miles of train tracks and the operating systems for the T Third Line extension.

Tutor Perini has extensive experience in building public infrastructure in the Bay Area and around the country. Tutor Perini improved the seismic reliability of the Richmond Bridge and is currently building the expansion of the Caldecott tunnel in the East Bay, among numerous other major projects.

To inform local businesses, residents, property owners and community groups about construction timelines and impacts, the SFMTA and Tutor Perini will work in partnership to disseminate  information and host community meetings before major work begins. The public may learn about Central Subway community meetings and construction by signing up for the project’s weekly construction emails. An online signup form is available at http://eepurl.com/oOs-b.

alignment_map_091412_ph2

Construction will take place at the sites of the four new stations, an on 4th Street south of the 1-80 overpass.

The following provides an overview of the work included in this major construction undertaking. More information is available in this press release from the SFMTA.

Timeline

Construction will be in progress at various sites from September 2013 to February 2018. Timelines will vary significantly at each site. Additional information will be provided in the coming months.

Locations and Scope of Work

Southern SoMa:

  • Location: Along and under 4th Street, between Bryant Street and King Street.
  • Main activities: Surface-level station at 4th and Brannan, surface-level tracks from King Street to the tunnel portal at Bryant Street, track reconfiguration at 4th and King streets to connect the Central Subway with existing T Third Line.

Northern SoMa:

  • Location: Along and under 4th Street, between Howard and Folsom streets.
  • Main activities: Demolition of gas station at 260 4th Street, construction of Yerba Buena/Moscone Station.

Union Square:

  • Location: Along and under Stockton Street, between Geary and Ellis streets, and at the southeast corner of Union Square Plaza.
  • Main activities: Union Square/Market Street Station, station entrance at southeast corner of Union Square Plaza, underground concourse connection to Powell Street Station.

Chinatown:

  • Location: Along and under Stockton Street, between Stockton and Washington streets, and at 933-949 Stockton Street.
  • Main activities: Demolition of 933-949 Stockton, construction of Chinatown Station at Stockton and Washington streets.
Categories: News

Now starting: Construction of Central Subway stations, tracks and operating systems

Construction Updates - Wed, 10/02/2013 - 15:56

Building-with-Wrap

This building in Chinatown will be demolished soon to make way for the Central Subway Chinatown Station.

Last month, we started the first construction activities to build the Central Subway’s stations, tracks and operating systems. This work will extend the Muni Metro T Third Line underground to improve public transit in some of San Francisco’s busiest neighborhoods. Once in operation, the Central Subway will cut travel times in half along congested Stockton Street and 4th Street while enhancing connections to BART, Muni Metro and Caltrain.

The first construction activities are preparatory in nature and include installing monitoring devices, putting up fences and removing hazardous materials at future subway station sites in Chinatown and SoMa. After completing this work, contractor Tutor Perini will demolish the existing structures at the sites of the future Chinatown Station (933-949 Stockton Street) and Yerba Buena/Moscone Station (260-266 4th Street). Station construction will follow.

At other locations, construction will commence later this year or in 2014. Construction timelines and impacts will vary significantly at the various project sites (more details below). Construction is expected to finish in 2018.

UMS Rendering - SE view - Sept 2012

Over the next few years, we will build the Union Square/Market Street Station on Stockton Street. This rendering shows the station entrance that will be built in Union Square Plaza, at the corner of Stockton and Geary.

The construction is part of SFMTA Contract 1300 (Stations, Track and Systems), awarded to Tutor Perini, a leading California-based construction firm, earlier this year. As part of this contract, Tutor Perini will construct three subway stations, one surface-level station, 1.7 miles of train tracks and the operating systems for the T Third Line extension.

Tutor Perini has extensive experience in building public infrastructure in the Bay Area and around the country. Tutor Perini improved the seismic reliability of the Richmond Bridge and is currently building the expansion of the Caldecott tunnel in the East Bay, among numerous other major projects.

To inform local businesses, residents, property owners and community groups about construction timelines and impacts, the SFMTA and Tutor Perini will work in partnership to disseminate  information and host community meetings before major work begins. The public may learn about Central Subway community meetings and construction by signing up for the project’s weekly construction emails. An online signup form is available at http://eepurl.com/oOs-b.

alignment_map_091412_ph2

Construction will take place at the sites of the four new stations, an on 4th Street south of the 1-80 overpass.

The following provides an overview of the work included in this major construction undertaking. More information is available in this press release from the SFMTA.

Timeline

Construction will be in progress at various sites from September 2013 to February 2018. Timelines will vary significantly at each site. Additional information will be provided in the coming months.

Locations and Scope of Work

Southern SoMa:

  • Location: Along and under 4th Street, between Bryant Street and King Street.
  • Main activities: Surface-level station at 4th and Brannan, surface-level tracks from King Street to the tunnel portal at Bryant Street, track reconfiguration at 4th and King streets to connect the Central Subway with existing T Third Line.

Northern SoMa:

  • Location: Along and under 4th Street, between Howard and Folsom streets.
  • Main activities: Demolition of gas station at 260 4th Street, construction of Yerba Buena/Moscone Station.

Union Square:

  • Location: Along and under Stockton Street, between Geary and Ellis streets, and at the southeast corner of Union Square Plaza.
  • Main activities: Union Square/Market Street Station, station entrance at southeast corner of Union Square Plaza, underground concourse connection to Powell Street Station.

Chinatown:

  • Location: Along and under Stockton Street, between Stockton and Washington streets, and at 933-949 Stockton Street.
  • Main activities: Demolition of 933-949 Stockton, construction of Chinatown Station at Stockton and Washington streets.
Categories: Construction Updates

Now starting: Construction of Central Subway stations, tracks and operating systems

Press Releases - Wed, 10/02/2013 - 15:56

Building-with-Wrap

This building in Chinatown will be demolished soon to make way for the Central Subway Chinatown Station.

Last month, we started the first construction activities to build the Central Subway’s stations, tracks and operating systems. This work will extend the Muni Metro T Third Line underground to improve public transit in some of San Francisco’s busiest neighborhoods. Once in operation, the Central Subway will cut travel times in half along congested Stockton Street and 4th Street while enhancing connections to BART, Muni Metro and Caltrain.

The first construction activities are preparatory in nature and include installing monitoring devices, putting up fences and removing hazardous materials at future subway station sites in Chinatown and SoMa. After completing this work, contractor Tutor Perini will demolish the existing structures at the sites of the future Chinatown Station (933-949 Stockton Street) and Yerba Buena/Moscone Station (260-266 4th Street). Station construction will follow.

At other locations, construction will commence later this year or in 2014. Construction timelines and impacts will vary significantly at the various project sites (more details below). Construction is expected to finish in 2018.

UMS Rendering - SE view - Sept 2012

Over the next few years, we will build the Union Square/Market Street Station on Stockton Street. This rendering shows the station entrance that will be built in Union Square Plaza, at the corner of Stockton and Geary.

The construction is part of SFMTA Contract 1300 (Stations, Track and Systems), awarded to Tutor Perini, a leading California-based construction firm, earlier this year. As part of this contract, Tutor Perini will construct three subway stations, one surface-level station, 1.7 miles of train tracks and the operating systems for the T Third Line extension.

Tutor Perini has extensive experience in building public infrastructure in the Bay Area and around the country. Tutor Perini improved the seismic reliability of the Richmond Bridge and is currently building the expansion of the Caldecott tunnel in the East Bay, among numerous other major projects.

To inform local businesses, residents, property owners and community groups about construction timelines and impacts, the SFMTA and Tutor Perini will work in partnership to disseminate  information and host community meetings before major work begins. The public may learn about Central Subway community meetings and construction by signing up for the project’s weekly construction emails. An online signup form is available at http://eepurl.com/oOs-b.

alignment_map_091412_ph2

Construction will take place at the sites of the four new stations, an on 4th Street south of the 1-80 overpass.

The following provides an overview of the work included in this major construction undertaking. More information is available in this press release from the SFMTA.

Timeline

Construction will be in progress at various sites from September 2013 to February 2018. Timelines will vary significantly at each site. Additional information will be provided in the coming months.

Locations and Scope of Work

Southern SoMa:

  • Location: Along and under 4th Street, between Bryant Street and King Street.
  • Main activities: Surface-level station at 4th and Brannan, surface-level tracks from King Street to the tunnel portal at Bryant Street, track reconfiguration at 4th and King streets to connect the Central Subway with existing T Third Line.

Northern SoMa:

  • Location: Along and under 4th Street, between Howard and Folsom streets.
  • Main activities: Demolition of gas station at 260 4th Street, construction of Yerba Buena/Moscone Station.

Union Square:

  • Location: Along and under Stockton Street, between Geary and Ellis streets, and at the southeast corner of Union Square Plaza.
  • Main activities: Union Square/Market Street Station, station entrance at southeast corner of Union Square Plaza, underground concourse connection to Powell Street Station.

Chinatown:

  • Location: Along and under Stockton Street, between Stockton and Washington streets, and at 933-949 Stockton Street.
  • Main activities: Demolition of 933-949 Stockton, construction of Chinatown Station at Stockton and Washington streets.
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