TBM Big Alma is crossing under Market Street and BART this week. This photo shows the back of the TBM as it approaches this key juncture. During the next 10 days, Central Subway work will continue at sites in SoMa, Union Square, Chinatown and North Beach. This post contains brief updates about what is happening […]
Tunnel boring machine Big Alma, shown here, will cross under BART and Market Street this week. This week the Central Subway’s second tunnel boring machine (TBM) will pass beneath Market Street and the existing Bay Area Rapid Transit (BART) and Muni Metro tunnels, crossing from SoMa and into Union Square. The tunnel, one of two being […]
On Stockton Street, the contractor has installed these barricades to protect pedestrians while construction of the Union Square/Market Street Station proceeds in the roadway. During the next 10 days, Central Subway work will continue at sites in SoMa, Union Square, Chinatown and North Beach. This post contains brief updates about what is happening in each […]
Tunneling is proceeding beneath 4th Street with TBM Big Alma. This TBM is expected to pass beneath Market Street around the end of January. During the next 10 days, Central Subway work will continue at sites in SoMa, Union Square, Chinatown and North Beach. This post contains brief updates about what is happening in each […]
This week, we closed a block of Stockton Street to prepare to build the Union Square/Market Street Station. Crews are installing decorative barricades around the construction zone. During the next 10 days, Central Subway work will continue at sites in SoMa, Union Square, Chinatown and North Beach. This post contains brief updates about what is […]
Next week traffic modifications on Stockton between Geary and Ellis streets near Union Square will recommence to accommodate construction of the Central Subway Union Square/Market Street station. During the next 10 days, Central Subway work will continue at sites in SoMa, Union Square, Chinatown and North Beach. This section contains brief updates about what is […]
