On Ellis Street, crews are excavating this shaft to perform ground improvements. During the next 10 days, construction to prepare for tunneling will continue in SoMa and Union Square. No Central Subway construction is planned to occur in Chinatown or North Beach. Descriptions of construction impacts in each neighborhood are available here or at the […]
At the site where tunneling will begin, crews have started to build a floor known as a mud slab on the bottom of the excavation. During the next 10 days, construction to prepare for tunneling will continue in SoMa and Union Square. No Central Subway construction is planned to occur in Chinatown or North Beach. […]
The Central Subway tunnels will end here, at the Pagoda Palace in North Beach, under a plan to relocate the retrieval site for the project’s tunnel boring machines. In response to community concerns about Central Subway construction in North Beach, SFMTA staff and multiple city agencies have worked for the past few months to relocate […]
At Union Square, the contractor is continuing to construct below-ground walls in preparation for tunneling. During the next 10 days, construction to prepare for tunneling will continue in SoMa and Union Square. No Central Subway construction is planned to occur in Chinatown or North Beach. Descriptions of construction impacts in each neighborhood are available here […]
A covered walkway has been installed on Stockton Street next to the site where crews are installing underground walls. During the next 10 days, construction to prepare for tunneling will continue in SoMa and Union Square. No Central Subway construction is planned to occur in Chinatown or North Beach. Descriptions of construction impacts in each […]
Mom Chung, shown here, will construct the tunnel for southbound trains. More photos of both TBMs are available on our Flickr page. (Photo courtesy of The Robbins Company) We are excited to introduce Big Alma and Mom Chung, the tunnel boring machines (TBMs) that will excavate and construct the Central Subway tunnels. Named Big […]
The Central Subway tunnels would end here, at the Pagoda Palace in North Beach, under a plan to relocate the retrieval site for the project’s tunnel boring machines. The Board of Supervisors today voted unanimously to pass a key component of the plan to relocate the retrieval site for the Central Subway’s tunnel boring machines […]
