Central Subway Construction Update – December 20, 2013

The Central Subway will extend the Muni Metro T Third Line underground through some of San Francisco's busiest and fastest growing neighborhoods. This significant improvement to public transit is scheduled to open in 2019. Thank you for your patience and interest as we build it.

The Central Subway will extend the Muni Metro T Third Line underground through some of San Francisco’s busiest and fastest growing neighborhoods. This significant improvement to public transit is scheduled to open in 2019. Thank you for your patience and interest as we build it.

 

 

 

 

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

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

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

Construction Update

December 21-January 6, 2013

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

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

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

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

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

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

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

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

-The Central Subway Team

 

At 1731-1741 Powell, we are constructing a retrieval shaft to remove two tunnel boring machines from the ground when tunneling is finished.
At 1731-1741 Powell, we are constructing a retrieval shaft to remove two tunnel boring machines from the ground when tunneling is finished.

North Beach

Powell Street from Union to Columbus

On private property at 1731-1741 Powell Street, the contractor is building a walled excavation known as a retrieval shaft at the site where tunneling will end. The two tunnel boring machines will be removed from the ground here. We plan to complete work at this location in 2014.

Near the intersection of Columbus Avenue and Union Street, construction will resume in January, starting Thursday, Jan. 2. The contractor is completing utility work. More information is available in this flier.

On private property at 1455 Stockton Street, the contractor is constructing an underground shaft to perform ground improvements when the TBMs pass below Columbus Avenue.

Planned construction (Pagoda):

  • Install pipes underground for ground improvements
  • Planned construction hours are Monday to Saturday, 6 a.m. to 11 p.m.

Traffic, transit and pedestrian impacts (Pagoda):

  • Several parking spaces may be closed in front of the property.

The sidewalk in front of the property may be closed. A temporary walkway will be in place around the construction zone