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SFMTA’s Central Subway will connect San Francisco’s southeast neighborhoods to downtown and Chinatown. Whether you’re a concerned citizen, business owner, Muni customer, or just stumbled onto our blog, we welcome your questions and encourage you to connect with us. Follow us for the latest Central Subway news and information.

02 April 2015 ~ 0 Comments

Featured Photos – April 2

An overhead view of the future Chinatown Station, where customers will descend on escalators to underground station platforms and trains.

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Construction crew members install rebar prior to pouring of concrete for forming the station roof.

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Lifting machines (pictured in the background) and excavators were used to remove soil from the construction site in preparation of roof-slab installation.

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27 March 2015 ~ 0 Comments

Project Advancements | March 28 – April 6

The crew continue to remove excess concrete from the top of a previously constructed slurry walls on Clementina Street.

The crew continue to remove excess concrete from the top of a previously constructed slurry walls on Clementina 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, 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 continues along 4th Street from Harrison to King streets. Ongoing 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 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.

  • Night work on Geary Boulevard and Stockton Street from March 29 to April 2
    • Geary Boulevard between Grant Avenue and Powell Street is closed to through traffic during work hours of 9 p.m. to 5 a.m.
    • Muni Service Impact:
      • Outbound 38 Geary route between Kearny and Mason streets rerouted during night work hours
      • Bus stops on Geary Boulevard at Kearny and at Powell streets will not be in use during detoured hours of 9 p.m. to 5 a.m.
        • Use alternate bus stops at Market and Montgomery streets or Geary Boulevard and Taylor Street

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

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

North Beach: Completion of sidewalk restoration, streetlight work and demobilization of equipment in front of 1731-1741 Powell Street anticipated by March 28. 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.

26 March 2015 ~ 0 Comments

Featured Photos – March 25

A decorative set-back curb and wall located above the Central Subway tunnel entrance south of Harrison on 4th Street.

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View of the tunnel portal ramp from 4th and Stillman during construction of the portal walls, which will separate automobile traffic from light rail vehicles.

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Workers put up temporary bracing while they pour concrete for the tunnel portal walls at 4th and Perry Alley.

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20 March 2015 ~ 0 Comments

Project Advancements | March 21 – 30

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

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.

 

19 March 2015 ~ 0 Comments

Featured Photos – March 19

Workers navigate around the exposed tops of excavated piles for the future Central Subway station near the Ellis Street entrance to Powell BART.

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Crews unearth 50-year-old temporary walls used originally for construction of the Ellis Street entrance to Powell BART.  Workers are currently excavating the future Union Square/Market Street Station mezzanine.  This underground passageway will be a key connection for the Central Subway and regional transit.

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Excavation is approximately half-way to the final depth of the south station mezzanine.  When completed, crews will have dug roughly 40 feet deep.

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13 March 2015 ~ 0 Comments

Project Advancements | March 14 – 23

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.

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.

12 March 2015 ~ 0 Comments

Portal Update

If you happen to be near 4th and Harrison streets you will notice the progress on the portal. The ramp structure houses the entrance and exit to the Central Subway tunnels.

The portal's roof slab ends in a crescent.

The portal’s roof slab ends in a crescent.

The portal takes shape as the workers build the walls.

Workers build the walls.

Metal reinforcement (rebar) sticks out from the top of the recently poured cement sides.

Metal reinforcement (rebar) sticks out from the top of the recently poured cement sides.

The crew use basket cranes to work on the sides of the portal.

The construction workers use basket cranes to access the upper sides of the portal.

One traffic lane on 4th Street, between Harrison and Bryant, recently reopened to traffic.

The crew prepares to restore the roadway.

The crew prepares to restore the roadway.

Restoration of one lane of the roadway was completed yesterday.

Restoration of one lane of the roadway was completed yesterday.

The portal structure is expected to be completed by May.

Weekly updates of construction progress are posted to this blog on Fridays.

12 March 2015 ~ 2 Comments

Featured Photos – March 12

Work to create the roof of the Yerba Buena/Moscone Station is moving along on the west side of 4th Street.

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The machine shown here is called a concrete boom pump, which has an extendable arm and transports wet concrete across long distances.

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Once the concrete is poured, a crew of workers smooth the cement to create a slab which serves as the base for forming the permanent roof slab.

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09 March 2015 ~ 0 Comments

Relocation of 47 Van Ness and 83X Mid-Market Express Bus Stop

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Due to the construction of the Central Subway, the 47 Van Ness and 83X Mid-Market Express bus stop on 4th Street between Bluxome and Townsend streets is being relocated to Townsend Street between 4th and 5th streets. The change is slated to take place on Friday, March 13.

bus_relocation2During the sewer upgrade work, drivers will be diverted to the outermost lanes of 4th Street, between Brannan and Townsend streets. The map to the right highlights the relocation of the bus stop. This bus stop is being relocated so buses will not impede the flow of southbound traffic.

For up-to-date construction related information and a ten day look ahead, check out our Construction Update posted to our blog on Fridays.

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06 March 2015 ~ 0 Comments

Project Advancements | March 7 – 16

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

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.