Workers install new utility lines along the portal structure on 4th Street
between Harrison and Bryant streets.

This post contains brief updates about recent construction activities and a look-ahead for what to expect in Southern SoMa, Northern SoMa, Union Square, Chinatown and North Beach over the next two weeks. For more detailed information, click here or on the links below. You can also find construction, traffic detour, and Muni impact information on our project Google Map.

Construction schedules may change due to unforeseen conditions. We encourage the public to follow traffic and pedestrian notifications posted at the work sites.

Southern SoMa (Harrison to King): Utility work along 4th Street from Harrison to King streets. Portal construction on 4th Street between Harrison and Bryant streets.

• One traffic lane is open on 4th Street between Harrison and Bryant streets
• The left lane on the I-80 freeway off-ramp at 4th and Bryant streets may be closed during potholing and pipe installation work
• Sewer upgrade work has expanded to 4th Street from Townsend Street into the intersection of King Street (more info here)
  • During work hours of Monday to Friday, 9 a.m. to 3 p.m.
    • No access to I-280 from King Street, use 3rd Street detour
    • No left turn from north bound 4th Street onto King Street, use 3rd or 5th streets to access I-280
    • Pedestrian access to the north crosswalk on 4th Street at King Street is unavailable

Northern SoMa (Market to Harrison): Excavation and construction of station roof along 4th Street between Howard and Folsom streets are underway. Ongoing ground improvement activities at 4th and Jessie streets.

Union Square: Excavation of the station, relocation and supporting of utilities on Stockton Street between Ellis and Post streets are ongoing.

Chinatown: Excavation of the site and installation of the station roof are in progress.

• Potholing starting March 23 along Stockton Street between Sacramento and Jackson streets
  • Parking will be unavailable during work Monday to Friday, 7 a.m. to 5 p.m.

North Beach: Completion of sidewalk and streetlight work in front of 1731-1741 Powell Street anticipated the week of March 23. Hours of work are 7 a.m. to 4 p.m.

We thank the businesses, residents, shoppers, and commuters of San Francisco for their continued engagement with this significant investment in the extension of our public transportation system. When opened in 2019, the Central Subway will provide a much-needed connection between major employment, retail, cultural and residential areas of the city.

The crew continue to excavate the site under Stockton Street between Maiden Lane and Geary Boulevard. Overhead braces have been installed to support the uncovered utilities.

This post contains brief updates about recent construction activities and a look-ahead for what to expect in Southern SoMa, Northern SoMa, Union Square, Chinatown and North Beach over the next two weeks. For more detailed information, click here or on the links below. You can also find construction, traffic detour, and Muni impact information on our project Google Map.

Construction schedules may change due to unforeseen conditions. We encourage the public to follow traffic and pedestrian notifications posted at the work sites.

Southern SoMa (Harrison to King): Utility work along 4th Street from Harrison to King streets. Portal construction on 4th Street between Harrison and Bryant streets.

• One traffic lane has reopened on 4th Street between Harrison and Bryant streets
• The left traffic lane on the I-80 freeway off-ramp at 4th and Bryant streets may be closed during potholing and pipe installation work
• Sewer upgrade work has expanded to 4th Street from Townsend Street into the intersection of King Street (more info here)
  • Work hours: Monday to Friday, 9 a.m. to 3 p.m., Saturday, 7 a.m. to 8 p.m.
  • No access to I-280 from King Street, use 3rd Street detour
  • No left turn from north bound 4th Street onto King Street, use 3rd or 5th streets to access I-280
  • The north crosswalk on 4th Street at King Street is unavailable
• The bus stop for the 47 Van Ness and 83X Mid-Market Express on 4th Street at Townsend Street has been relocated to Townsend Street between 4th and 5th streets

Northern SoMa (Market to Harrison): Excavation and construction of station roof along 4th Street between Howard and Folsom streets are underway. Ongoing ground improvement activities at 4th and Jessie streets.

Union Square: Excavation of the station, relocation and supporting of utilities on Stockton Street between Ellis and Post streets are ongoing.

Chinatown: Excavation of the site and installation of the station roof are in progress.

• Monitoring equipment installation on sidewalks along Stockton Street between Sacramento and Jackson streets
  • Sidewalks to remain open
  • Work hours: Monday to Friday, 7 a.m. to 4 p.m.

North Beach: Completion of work in front of 1731-1741 Powell Street is anticipated by the week of March 16. Hours of work are 7 a.m. to 4 p.m.

• Hydrant relocation and sidewalk restoration continues
• Street light installation may start in late March

We thank the businesses, residents, shoppers, and commuters of San Francisco for their continued engagement with this significant investment in the extension of our public transportation system. When opened in 2019, the Central Subway will provide a much-needed connection between major employment, retail, cultural and residential areas of the city.

Two concrete trucks pour concrete for a portion of the roof slab at the future Yerba Buena/Moscone Station.

This post contains brief updates about recent construction activities and a look-ahead for what to expect in Southern SoMa, Northern SoMa, Union Square, Chinatown and North Beach over the next two weeks. For more detailed information, click here or on the links below. You can also find construction, traffic detour, and Muni impact information on our project Google Map.

Construction schedules may change due to unforeseen conditions. We encourage the public to follow traffic and pedestrian notifications posted at the work sites.

Southern SoMa (Harrison to King): Utility work along 4th Street from Harrison to King streets. Portal construction on 4th Street between Harrison and Bryant streets.

• One traffic lane is anticipated to reopen on 4th Street between Harrison and Bryant streets on Wednesday, March 11
• The bus stop for the 47 Van Ness and 83X Mid-Market Express on 4th Street at Townsend Street is anticipated to be relocated on Friday, March 13, to Townsend Street between 4th and 5th streets

Northern SoMa (Market to Harrison): Excavation and construction of station roof along 4th Street between Howard and Folsom streets. Ongoing ground improvement activities at 4th and Jessie streets.

• 4th Street between Howard and Folsom streets is anticipated to reduce to one traffic lane March 9 and 10
• Utility work on Folsom Street at 4th Street
  • Two traffic lanes available on Folsom Street during construction hours of 7 p.m. to 5 a.m.

Union Square: Excavation of the station, relocation and supporting of utilities on Stockton Street between Ellis and Post streets.

Chinatown: Excavation of the site and installation of the station roof.

• Monitoring equipment installation on sidewalks along Stockton Street from Washington to Sacramento streets
  • Sidewalks to remain open
  • Work the week of March 9 from 7 a.m. to 4 p.m.
• Sewer upgrade on Stockton Street between Washington and Jackson streets
  • Parking lanes on both sides of Stockton Street will be used for travel lanes from 9 a.m. to 3 p.m.

North Beach: Completion of work in front of 1731-1741 Powell Street is anticipated by mid-March. Hours of work are 7 a.m. to 4 p.m. A lane of traffic will be available on Powell Street.

• San Francisco Water Department is relocating a fire hydrant
  • Night work anticipated on Monday, March 9
• Sidewalk restoration is slated for completion by mid-March after hydrant relocation
• Street light installation may start in late March

We thank the businesses, residents, shoppers, and commuters of San Francisco for their continued engagement with this significant investment in the extension of our public transportation system. When opened in 2019, the Central Subway will provide a much-needed connection between major employment, retail, cultural and residential areas of the city.

Workers lift a section of pipe that will be used to pour concrete into the excavated pile shafts. The concrete piles form the foundation of the future 4th and Brannan Station.

This post contains brief updates about recent construction activities and a look-ahead for what to expect in Southern SoMa, Northern SoMa, Union Square, Chinatown and North Beach over the next two weeks. For more detailed information, click here or on the links below. You can also find construction, traffic detour, and Muni impact information on our project Google Map.

Construction schedules may change due to unforeseen conditions. We encourage the public to follow traffic and pedestrian notifications posted at the work sites.

Southern SoMa (Harrison to King): Utility work along 4th Street from Harrison to King streets. Portal construction on 4th Street between Harrison and Bryant streets.

Northern SoMa (Market to Harrison): Excavation and construction of station roof along 4th Street between Howard and Folsom streets. Ongoing ground improvement activities at 4th and Jessie streets.

• Utility work on Folsom Street at 4th Street
  • Two traffic lanes available on Folsom Street during work hours of 9 p.m. to 5 a.m.

Union Square: Excavation of the station, relocation and supporting of utilities on Stockton Street between Ellis and Post streets.

Chinatown: Excavation of the site and preparation for the installation of the station roof.

• Sewer upgrade on Stockton Street between Washington and Jackson streets
  • Parking lanes on both sides of Stockton Street will be used for travel lanes from 9 a.m. to 3 p.m.
  • Night work anticipated March 3 and 4 from 7 p.m. to 7 a.m.

North Beach: Completion of work in front of 1731-1741 Powell Street (retrieval shaft) is anticipated by early March. Hours of work are 7 a.m. to 4 p.m. A lane of traffic will be available on Powell Street.

• Sidewalk restoration is slated for completion by early March
• Street light installation may start in early March

We thank the businesses, residents, shoppers, and commuters of San Francisco for their continued engagement with this significant investment in the extension of our public transportation system. When opened in 2019, the Central Subway will provide a much-needed connection between major employment, retail, cultural and residential areas of the city.

Workers install waterproofing and build temporary wooden forms before pouring concrete for the new interior walls of the tunnel portal.

This post contains brief updates about recent construction activities and a look-ahead for what to expect in Southern SoMa, Northern SoMa, Union Square, Chinatown and North Beach over the next two weeks. For more detailed information, click here or on the links below. You can also find construction, traffic detour, and Muni impact information on our project Google Map.

Construction schedules may change due to unforeseen conditions. We encourage the public to follow traffic and pedestrian notifications posted at the work sites.

Southern SoMa (Harrison to King): Utility work along 4th Street from Harrison to King streets. Portal construction on 4th Street between Harrison and Bryant streets.

Northern SoMa (Market to Harrison): Excavation and construction of station roof along 4th Street between Howard and Folsom streets. Ongoing ground improvement activities at 4th and Jessie streets.

• Utility work on Folsom Street at 4th Street
  • Two traffic lanes available on Folsom Street during work hours of 9 p.m. to 5 a.m.

Union Square: Excavation of the station, relocation and supporting of utilities on Stockton Street between Ellis and Post streets.

Chinatown: Excavation of the site and preparation for the installation of the station roof.

• Sewer upgrade starting Feb. 23 on Stockton Street between Washington and Jackson streets
  • Parking lanes on both sides of Stockton Street will be used for travel lanes from 9 a.m. to 3 p.m.

North Beach: Work in front of 1731-1741 Powell Street (retrieval shaft) is anticipated to finish by the end of February. Hours of work are 7 a.m. to 4 p.m. A lane of traffic will be available on Powell Street.

• Sidewalk restoration is slated for completion by the end of Feb.
• Street light installation may start by the end of Feb.

We thank the businesses, residents, shoppers, and commuters of San Francisco for their continued engagement with this significant investment in the extension of our public transportation system. When opened in 2019, the Central Subway will provide a much-needed connection between major employment, retail, cultural and residential areas of the city.

This section contains brief updates about recent construction activities and a look-ahead for what to expect in Southern SoMa, Northern SoMa, Union Square, Chinatown and North Beach over the next two weeks. For more detailed information, scroll down or click on the links below. You can also find construction, traffic detour, and Muni impact information on our project Google Map.

Construction schedules may change due to unforeseen conditions. We encourage the public to follow traffic and pedestrian notifications posted at the work sites.

Southern SoMa (Harrison to King): Utility work along 4th Street from Harrison to King streets. Portal construction on 4th Street between Harrison and Bryant streets.

Northern SoMa (Market to Harrison): Excavation and construction of station roof along 4th Street between Howard and Folsom streets. Ongoing ground improvement activities at 4th and Jessie streets.

Union Square: Excavation of the station, relocation and supporting of utilities and pile installation on Stockton Street between Ellis and Post streets.

• Beginning Feb. 13, one travel lane will be available on O’Farrell Street at Stockton Street

Chinatown: Excavation of the site in preparation for the installation of the station roof. Fire hydrant work on Washington Street between Stockton and Spofford streets is completed.

North Beach: Work in front of 1731-1741 Powell Street (retrieval shaft) is anticipated to finish by the end of the month. Hours of work are 7 a.m. to 4 p.m. A lane of traffic will be available on Powell Street.

• Sidewalk restoration is slated for completion by the week of Feb. 16
• Street light installation may start the week of Feb. 16

We thank the businesses, residents, shoppers, and commuters of San Francisco for their continued engagement with this significant investment in the extension of our public transportation system. When opened in 2019, the Central Subway will provide a much-needed connection between major employment, retail, cultural and residential areas of the city.

The video shows TBM Mom Chung breaking into the water-filled retrieval shaft last June. The water is drained from the shaft for the arrival of TBM Big Alma. The departure of the machines comes next as workers remove both TBMs, piece by piece, over several months. The retrieval shaft site was restored and vacated in January 2015.

A metal cover was installed as the final step in restoring the site.

For more information about the project and construction progress, follow us on Facebook, Twitter, Flickr, YouTube and check out our project website.

Workers pour concrete for the portal under 4th Street.

This post contains brief updates about recent construction activities and a look-ahead for what to expect in Southern SoMa, Northern SoMa, Union Square and Chinatown over the next two weeks. For more detailed information, click here or on the links below. You can also find construction, traffic detour, and Muni impact information on our project Google Map.

Construction schedules may change due to unforeseen conditions. We encourage the public to follow traffic and pedestrian notifications posted at the work sites.

Southern SoMa (Harrison to King): Utility work along 4th Street from Harrison to King streets. Portal construction on 4th Street between Harrison and Bryant streets.

• Pile installation starting week of Jan. 26 on 4th Street between Welsh and Brannan streets
• Tentative sewer work may begin the week of Feb. 2 on 4th Street between Brannan and Townsend streets

Northern SoMa (Market to Harrison): Excavation of the station along 4th Street between Howard and Folsom streets. Ground improvement activites at 4th and Jessie streets.

Union Square: Excavation of the station, relocation and supporting of utilities and pile installation on Stockton Street between Ellis and Post streets.

Chinatown: Excavation of the site in preparation for the installation of the station roof. Ongoing utility installation at Stockton and Washington streets.

We thank the businesses, residents, shoppers, and commuters of San Francisco for their continued engagement with this significant investment in the extension of our public transportation system. When opened in 2019, the Central Subway will provide a much-needed connection between major employment, retail, cultural and residential areas of the city.

Workers re-install barricades on Stockton Street.

This post contains brief updates about recent construction activities and a look-ahead for what to expect in Southern SoMa, Northern SoMa, Union Square and Chinatown over the next two weeks. For more detailed information, click here or on the links below. You can also find construction, traffic detour, and Muni impact information on our project Google Map.

Construction schedules may change due to unforeseen conditions. We encourage the public to follow traffic and pedestrian notifications posted at the work sites.

Southern SoMa (Harrison to King): Utility work along 4th Street from Harrison to King streets. Portal construction on 4th Street between Harrison and Bryant streets.

• Tentative pile installation starting week of Jan. 26 on 4th Street between Welsh and Brannan streets

Northern SoMa (Market to Harrison): Excavation of the station along 4th Street between Howard and Folsom streets. Ground improvement activites at 4th and Jessie streets.

• Two lanes on the east side of 4th Street are open between Market and Mission streets

Union Square: Excavation of the station, relocation of utilities and pile installation on Stockton Street between Ellis and Post streets.

• Ellis Street at Stockton Street is closed to vehicular traffic
• Stockton Street between Ellis and Post streets is closed to vehicular traffic

Chinatown: Excavation of the site in preparation for the installation of the station roof. Ongoing utility installation at Stockton and Washington streets.

We thank the businesses, residents, shoppers, and commuters of San Francisco for their continued engagement with this significant investment in the extension of our public transportation system. When opened in 2019, the Central Subway will provide a much-needed connection between major employment, retail, cultural and residential areas of the city.

Construction crews dig out the future Yerba Buena/Moscone Station. This station is one of four being constructed for the new alignment of the T Third Line.

This post contains brief updates about recent construction activities and a look-ahead for what to expect in Southern SoMa, Northern SoMa, Union Square, Chinatown and North Beach over the next two weeks. For more detailed information, click here or on the links below. You can also find construction, traffic detour, and Muni impact information on our project Google Map.

Check out our new video which highlights 2014 Central Subway milestones and progress.

Construction schedules may change due to unforeseen conditions. We encourage the public to follow traffic and pedestrian notifications posted at the work sites.

Southern SoMa (Harrison to King): Utility work along 4th Street from Harrison to King streets. Portal construction continues on 4th Street between Harrison and Bryant streets.

• Tentative pile installation starting week of Jan. 19 on 4th Street between Freelon and Brannan streets
• Sewer work on 4th Street between Freelon and Bluxome streets

Northern SoMa (Market to Harrison): Excavation of the station along 4th Street between Howard and Folsom streets. Repair of utility lines at 4th and Jessie streets.

• Two lanes on the east side of 4th Street are open between Market and Mission streets

Union Square: Construction has resumed on Stockton Street between Ellis and Post streets. Crews are excavating the site and relocating utilities.

• Ellis Street at Stockton Street is closed to vehicular traffic
• Stockton Street between Geary Boulevard and Post Street is closed to vehicular traffic

Chinatown: Construction crews are demobilizing equipment and excavating the site in preparation for the installation of the station roof. Ongoing utility installation at Stockton and Washington streets.

• Night work: removal of heavy equipment is anticipated early morning of Jan. 12 between the hours of midnight and 6 a.m.

North Beach: Restoration of the retrieval shaft site is complete. The North Beach section of the weekly update will be phased out next week due to the completion of our work at that site.

We thank the businesses, residents, shoppers, and commuters of San Francisco for their continued engagement with this significant investment in the extension of our public transportation system. When opened in 2019, the Central Subway will provide a much-needed connection between major employment, retail, cultural and residential areas of the city.