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Construction Update | Nov. 16-25

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

131113_1074_SB_Tunnel

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.
Categories: Press Releases

Beneath the Pagoda Palace, foundations of San Francisco’s history

Community News - Mon, 09/30/2013 - 12:15

john+fatherjohn

Father John Takahashi and Central Subway Program Director John Funghi stand beside concrete blocks that once formed the foundation of a historic North Beach church.

Earlier this month, construction crews demolishing the Pagoda Palace unearthed a long-lost piece of San Francisco history: the foundations of a church that stood on these grounds more than a century ago.

The Holy Trinity Orthodox Cathedral, now located at 1520 Green Street, once stood in North Beach at the corner of Powell Street and Columbus Avenue. Built in 1888, the dramatic onion-domed structure was completely destroyed by the great San Francisco earthquake and fire of 1906. All that remained were five bronze bells – and they survived because they were off site at the time, being repaired. The church relocated to the Green Street location soon after, opening in 1909.

Last week a concrete block from the old church’s foundations joined the bells at the Green Street cathedral. After construction crews unearthed the foundations, we contacted Father John Takahashi, the senior priest of the Holy Trinity Orthodox Cathedral, to inform him of our discovery. We also invited him to visit the construction site and see the newly uncovered relics of his church’s past.

holytrinitycathedral

The Holy Trinity Cathedral on Powell Street, circa 1890.

Once on site, Father John spoke with Central Subway Program Director John Funghi, and the Central Subway team gave Father John a block of concrete from the old foundations. The block will now live in the garden of the Green Street cathedral.

Central Subway crews discovered the historic foundations while dismantling the thick concrete slab that formed the base of the Pagoda Palace Theatre. Once the slab was removed, the outlines of the foundation revealed themselves amidst dirt and rubble.

Archeologists and construction personnel examined the unearthed foundations and concluded that they were consistent with building practices in the late 19th century. The absence of rebar, the consistency of the concrete and the size of the aggregate in it helped support this conclusion.

With a piece of the old church now safely preserved, crews then broke apart what remained of the foundations to make room for the next phase of Central Subway construction, and the next chapter in the life of this storied North Beach site.

Categories: Community News

Beneath the Pagoda Palace, foundations of San Francisco’s history

Featured News - Mon, 09/30/2013 - 12:15

john+fatherjohn

Father John Takahashi and Central Subway Program Director John Funghi stand beside concrete blocks that once formed the foundation of a historic North Beach church.

Earlier this month, construction crews demolishing the Pagoda Palace unearthed a long-lost piece of San Francisco history: the foundations of a church that stood on these grounds more than a century ago.

The Holy Trinity Orthodox Cathedral, now located at 1520 Green Street, once stood in North Beach at the corner of Powell Street and Columbus Avenue. Built in 1888, the dramatic onion-domed structure was completely destroyed by the great San Francisco earthquake and fire of 1906. All that remained were five bronze bells – and they survived because they were off site at the time, being repaired. The church relocated to the Green Street location soon after, opening in 1909.

Last week a concrete block from the old church’s foundations joined the bells at the Green Street cathedral. After construction crews unearthed the foundations, we contacted Father John Takahashi, the senior priest of the Holy Trinity Orthodox Cathedral, to inform him of our discovery. We also invited him to visit the construction site and see the newly uncovered relics of his church’s past.

holytrinitycathedral

The Holy Trinity Cathedral on Powell Street, circa 1890.

Once on site, Father John spoke with Central Subway Program Director John Funghi, and the Central Subway team gave Father John a block of concrete from the old foundations. The block will now live in the garden of the Green Street cathedral.

Central Subway crews discovered the historic foundations while dismantling the thick concrete slab that formed the base of the Pagoda Palace Theatre. Once the slab was removed, the outlines of the foundation revealed themselves amidst dirt and rubble.

Archeologists and construction personnel examined the unearthed foundations and concluded that they were consistent with building practices in the late 19th century. The absence of rebar, the consistency of the concrete and the size of the aggregate in it helped support this conclusion.

With a piece of the old church now safely preserved, crews then broke apart what remained of the foundations to make room for the next phase of Central Subway construction, and the next chapter in the life of this storied North Beach site.

Categories: News

Construction Update | Sept. 28-Oct. 7

Construction Updates - Fri, 09/27/2013 - 17:19

130925_1045_Pagoda

The Pagoda Palace site this week, after our crews completed demolishing the former theater.

During the next 10 days, tunneling and tunneling preparatory work will continue in southern 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 7:

  • Southern SoMa (Harrison to King/Berry): During the week of September 30, one lane of the I-80 off-ramp at 4th and Bryant may close. 4th Street between Harrison and Bryant may fully close some evenings and weekends to allow for the installation of tunnel boring machine segments. 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.
  • 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 close Saturday, September 28 to allow for ground improvement work. 4th Street between Howard and Folsom will remain open to traffic, with demolition of the 76 gas station commencing next week. On 4th Street between Market and Stevenson, at least three lanes of traffic will be open.
  • Chinatown: Station contractor Tutor Perini will install monitoring devices and cap utilities at the Chinatown Station site (933-949 Stockton Street). Several parking spaces may be closed on the east side of Stockton Street and on both sides of Washington Street adjacent to the building. The sidewalk adjacent to the building will be closed to pedestrians for approximately two weeks. A partial lane closure may be in effect on Washington Street just west of Stockton Street. Night work will be underway from October 2-4, with traffic impacted at the intersection of Stockton and Washington on these nights.
  • North Beach: Construction of a retrieval shaft, to be used to remove two tunnel boring machines, is commencing at the Pagoda Palace site. The first activity is to install 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 while equipment mobilization is in progress.

At these locations, current construction impacts are planned to continue until October 7:

  • 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 Sept. 7- Sept.16

Construction Updates - Mon, 09/09/2013 - 11:45







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Crews continue to prepare tunnel boring machine Big Alma for tunneling.

Crews continue to prepare tunnel boring machine Big Alma for tunneling.

Central Subway construction is starting this fall in Chinatown. Please join us on September 10 for a community meeting to learn more about upcoming work and ask any questions you may have. The meeting will be held at the Gum Moon Women’s Residence, 940 Washington Street, at 4 p.m.

During the next 10 days, construction to prepare for tunneling will continue in SoMa and Union Square. In North Beach, demolition of the Pagoda Palace will continue. Central Subway construction is planned to begin in Chinatown in mid-to-late September.

For descriptions of construction impacts in each neighborhood, scroll down or click 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 September 16:

  • Northern SoMa (Market to Harrison): On 4th Street between Howard and Folsom, the construction zone will move from the east side of the street to the west side starting early next week. Two lanes of traffic will remain open at all times. On 4th Street between Market and Stevenson, two traffic lanes will remain closed on the east side of the street.
  • Chinatown: No construction planned.
  • North Beach:  Work will be in progress within the Pagoda Palace this Saturday from 8 a.m. to 4 p.m. On Monday, September 9, from 1 a.m. to 5 a.m., the contractor will remove a specialized excavator from the site. Equipment demobilization will require a brief closure of Powell Street between Union and Columbus and Union Street between Columbus and Powell. During this time, parking will be impacted on both blocks. At all other times, both streets will remain open and parking will be impacted only in front of the Pagoda Palace property.

At these locations, current construction impacts are planned to continue until September 16:

  • 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 tunnel boring machine segments. 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.
  • 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 Aug. 30-Sept. 9

Construction Updates - Mon, 09/09/2013 - 11:33
Construction continues in Union Square, where we are constructing underground walls on Stockton Street.

Construction continues in Union Square, where we are constructing underground walls on Stockton Street.

During the next 10 days, construction to prepare for tunneling will continue in SoMa and Union Square. In North Beach, demolition of the Pagoda Palace will continue. No Central Subway construction is planned in Chinatown.

In observance of the Labor Day Holiday, no Central Subway construction is planned for SoMa, Moscone, and Union Square/Market Street.

For descriptions of construction impacts in each neighborhood, scroll down or click 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 September 9:

  • Southern SoMa (Harrison to King/Berry): 4th Street between Harrison and Bryant may fully close some evenings and weekends starting Wednesday, September 4, to allow for installation of tunnel boring machine segments. 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.
  • North Beach: Work will be in progress this Saturday from 7 a.m. to 3:30 p.m. demolishing the back brick wall by hand and off-haul materials from the site. Parking may be impacted in front of the Pagoda Palace property. The sidewalk in front of the property may be closed.

At these locations, current construction impacts are planned to continue until September 9:

  • Northern SoMa (Market to Harrison): Two lanes of traffic will remain closed on 4th Street between Howard and Folsom. On 4th Street between Market and Stevenson, two traffic lanes will remain closed on the eastern side of the street.
  • 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 | Aug. 24-Sept. 2

Construction Updates - Fri, 08/23/2013 - 16:35

130820_1004_Pagoda

This week crews dismantled the facade of the Pagoda Palace, a former movie theater in North Beach that stood vacant for 20 years. Next year we will remove the tunnel boring machines from the ground at this location.

During the next 10 days, construction to prepare for tunneling will continue in SoMa and Union Square. In North Beach, demolition of the Pagoda Palace will continue. No Central Subway construction is planned in Chinatown.

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 September 2:

  • Southern SoMa (Harrison to King/Berry): 4th Street between Harrison and Bryant may fully close some evenings and weekends starting Tuesday, August 27, to allow for installation of tunnel boring machine segments. 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.
  • North Beach: The contractor has demolished enough of the Pagoda Palace to reopen Powell Street between Columbus and Union starting Saturday, August 24. The traffic lane still may be narrowed at times. The 39 Coit will return to its regular route. Work will be in progress this Saturday, August 24, from 7 a.m. to 12 noon to off-haul materials from the site. Parking will be impacted in front of the Pagoda Palace property. The sidewalk in front of the property may be closed.

At these locations, current construction impacts are planned to continue until September 2:

  • Northern SoMa (Market to Harrison): Two lanes of traffic will remain closed on 4th Street between Howard and Folsom. On 4th Street between Market and Stevenson, two traffic lanes will remain closed on the eastern side of the street.
  • Chinatown: No construction planned.
  • 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 | August 17-26

Construction Updates - Fri, 08/16/2013 - 17:02

130815_1008_Ellis

On Ellis Street, crews are drilling tubes into the earth underground. When the tunnel boring machines pass below, we will inject grout through the tubes, improving the ground.

During the next 10 days, construction to prepare for tunneling will continue in SoMa and Union Square. In North Beach, demolition of the Pagoda Palace will continue. No Central Subway construction is planned in Chinatown.

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 August 26:

  • North Beach: For approximately five days, starting Monday, August 19, through traffic on Powell Street between Columbus Avenue and Union Street will be restricted during working hours (7 a.m. to 3:30 p.m.). Local vehicle access to Powell Street will be provided from Union Street. At the end of each working day, the contractor will re-establish the regular traffic pattern. This temporary traffic modification will allow us to enhance public safety protections while demolishing the building’s facade. See this diagram for details. Parking will be impacted in front of the Pagoda Palace property. The sidewalk in front of the property may be closed.

At these locations, current construction impacts are planned to continue until August 26:

  • Southern SoMa (Harrison to King/Berry): Two lanes of traffic will remain open on 4th Street between Harrison and Bryant. On Bryant Street at 5th Street, the left lane and several parking spaces will remain closed.
  • Northern SoMa (Market to Harrison): Two lanes of traffic will remain closed on 4th Street between Howard and Folsom. On 4th Street between Market and Stevenson, the sidewalk and two traffic lanes will remain closed on the eastern side of the street.
  • Chinatown: No construction planned.
  • 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 | August 10-19

Construction Updates - Fri, 08/09/2013 - 20:00

Taken from a nearby roof, this photo shows our construction site at 4th and Folsom and the gas station that will be demolished to make way for the future Yerba Buena/Moscone Station.

During the next 10 days, construction to prepare for tunneling will continue in SoMa and Union Square. In North Beach, demolition of the Pagoda Palace will continue. No Central Subway construction is planned in Chinatown.

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 August 19:

  • Union Square: Water line work will be underway on O’Farrell Street between Stockton and Powell from Monday to Friday next week. To facilitate this work, O’Farrell Street may be narrowed to one lane from 9 a.m. to 3 p.m. on weekdays.Stockton Street between Geary and Ellis will remain closed to vehicle traffic. Ellis Street between Stockton and Powell will remain closed to westbound traffic.

At these locations, current construction impacts are planned to continue until
August 19:

  • Southern SoMa (Harrison to King/Berry): Two lanes of traffic will remain open on 4th Street between Harrison and Bryant. On Bryant Street at 5th Street, the left lane and several parking spaces will remain closed.
  • Northern SoMa (Market to Harrison): Two lanes of traffic will remain closed on 4th Street between Howard and Folsom. On 4th Street between Market and Stevenson, the sidewalk and two traffic lanes will remain closed on the eastern side of the street.
  • Chinatown: No construction planned.
  • North Beach: Demolition of the Pagoda Palace is continuing in North Beach. Parking will be impacted in front of the Pagoda Palace property. The sidewalk in front of the property may be closed. Powell Street between Union and Columbus will remain open to traffic, but the traffic lane may be narrowed. For more information about demolition, check out this fact sheet and the North Beach section of this email.

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

Categories: Construction Updates

Construction Update | August 3-12

Construction Updates - Fri, 08/02/2013 - 16:56

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This week we hosted members of the American Public Transportation Association on a tour of project sites, including the tunnel launch box. Here, Central Subway Deputy Program Manager Albert Hoe shows tunnel boring machine Big Alma to tour goers.

During the next 10 days, construction to prepare for tunneling will continue in SoMa and Union Square. In North Beach, demolition of the Pagoda Palace will continue. No Central Subway construction is planned in Chinatown.

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 August 12:

  • Union Square: Next week, both lanes of O’Farrell Street between Stockton and Powell will remain open to vehicle traffic, with no water line work underway. Water line work is planned to recommence the week of August 12. 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: Demolition of the Pagoda Palace is continuing in North Beach. On Monday, August 5, from 1 a.m. to 5 a.m., the contractor will move a specialized excavator onto the site to commence demolition of the building facade. Equipment mobilization will require a brief closure of Powell Street between Union and Columbus and Union Street between Columbus and Powell. During this time, parking will be impacted on both blocks. At all other times, both streets will remain open and parking will be impacted only in front of the Pagoda Palace property. For more information about demolition, check out this fact sheet and the North Beach section of this email.

At these locations, current construction impacts are planned to continue until
August 12:

  • Southern SoMa (Harrison to King/Berry): No full closures of 4th Street between Harrison and Bryant are planned for this period. 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.
  • Northern SoMa (Market to Harrison): Two lanes of traffic will remain closed on 4th Street between Howard and Folsom. On 4th Street between Market and Stevenson, the sidewalk and two traffic lanes will remain closed on the eastern side of the street.
  • Chinatown: No construction planned.

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

Categories: Construction Updates

Tunneling crews assemble Big Alma, the Central Subway’s second TBM

Featured News - Thu, 08/01/2013 - 17:21

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Late in the night last month, crews installed the cutter head of tunnel boring machine (TBM) Big Alma. The massive machine’s cylindrical shield was already in place below.

Big Alma has arrived. The massive tunneling machine — the identical twin of recently launched Mom Chung — is now under assembly underground. Last month, tunneling crews lowered large sections of Big Alma into the tunnel launch box, the major excavation under 4th Street between Harrison and Bryant where tunneling begins. After about two months of assembly, Big Alma will begin building a tunnel parallel to Mom Chung’s, extending the Muni Metro T Third Line through SoMa, Union Square and Chinatown.

The photos in this post show the installation of Big Alma’s cutter head. The cutter head, a spinning excavator at the front of the machine, will dig through bedrock, clay and sand as Big Alma travels north beneath 4th Street, Stockton Street and Columbus Avenue. This major component of the TBM is about 20 feet in diameter and weighs about 143,000 pounds. While tunneling is underway, the cutter head will pump out an environmentally safe, soap-like foam to condition the ground as it cuts through the earth like a cheese grater. Once loosened, spoils pass through holes in the cutter head for transport out of the tunnel.

To learn more about the TBMs and their tunneling journey, follow them on Twitter. They’re @BigAlmatheTBM and @MomChungtheTBM.

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A large red crane, called a gantry crane, lifts the cutter head from the ground.

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When Big Alma tunnels, these wheels will spin to loosen the ground, aided by an environmentally safe, soap-like foam that conditions it.

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Operated by our tunneling crews, the crane lifts the cutter head into a vertical position to allow for installation.

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Crews help stabilize the cutter head before lowering it underground.

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The crane moves the cutter head into position over the tunnel launch box, where Big Alma’s cylindrical shield awaits.

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The shield, already underground, will stabilize the tunnel and form a watertight barrier while mining is in progress. Concrete tunnel segments are installed within the back of the shield and bolted together by tunneling crews.

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Above the shield, the cutter head descends into the excavation.

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The front of the shield, before the cutter head is installed. During tunneling, excavated ground spoils will pass through the hole at the bottom for transport out of the tunnel.

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The cutter head continues its descent into the excavation.

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Once the cutter head is lowered, crews work to connect it to the shield.

 

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To connect the TBM segments, crews bolt them together. Later, they will reinforce the connections with welding.

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The TBM assembly team poses in front of Big Alma. We thank our dedicated crews for all their hard work.

 

Categories: News

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