The tunneling contractor has begun installing below-ground walls to prepare for tunneling at this site on 4th Street between Howard and Folsom streets. Since our last update, construction in Union Square and North Beach has paused for the holiday season, while work at two sites in SoMa has continued to move forward. In addition, work […]
This construction site near Union Square will be restored and reopened to traffic during the holiday season. During the holiday season, construction at some currently active Central Subway construction sites will pause, with roadways and pedestrian walkways restored to regular use. At other sites, construction will continue. This blog post provides a summary of construction […]
This construction site on Stockton Street recently hosted an event to celebrate approval of major federal funding for the Central Subway. Tunnel pre-construction remains underway at four construction sites along the Central Subway Project alignment, including the site shown above, which last week hosted a ceremony to celebrate approval of federal funding to extend the […]
The Central Subway’s two tunnels — one for northbound trains and one for southbound trains — will be constructed using state-of-the-art excavators known as tunnel boring machines (TBMs). For the past few months, TBM supplier Robbins has been busy building the Central Subway’s two TBMs — and we have photos of their progress. The Central […]
The traffic configuration near this construction site in SoMa will be modified starting Saturday. Starting Saturday, September 29, a new traffic pattern will be established on 4th Street between Harrison and Bryant streets, at the site where tunneling will begin next year. To facilitate construction in the northwest and southeast sections of the block, vehicles […]
This block of Columbus Avenue in North Beach is temporarily restored for traffic at the end of each work day. With autumn just around the corner, tunnel pre-construction continues to move forward in SoMa, Union Square and North Beach. As tunneling contractor Barnard Impregilo Healy JV completes work along the alignment, new traffic configurations are […]
To avoid traffic congestion on this section of 4th Street, we suggest using the detours described below. As tunneling contractor Barnard Impregilo Healy Joint Venture continues to make progress on tunnel pre-construction work, traffic configurations at a construction site in SoMa will be modified next week, starting Tuesday, September 4. No Central Subway construction will occur […]
Central Subway construction will take place on this block of Columbus Avenue near Washington Square Park. Construction associated with the Central Subway tunnel will begin August 13 in North Beach. The work involves relocating utility lines on a half-block section of Columbus Avenue between Union and Powell streets. The Central Subway tunnel is planned to […]
This video shows the work currently underway on 4th Street between Bryant and Harrison streets in SoMa. The full HD video can be downloaded here. It may look like a lot of dirt and mud right now, but in just a few years, what you see in the video above will become the Central Subway […]
Construction is now underway on 4th Street near the intersection with Folsom Street. Construction to prepare for the installation of below-ground walls, called headwalls, has begun on 4th Street between Folsom and Howard streets, the site of the future Yerba Buena/Moscone Station. The work currently underway includes potholing and utility relocation. Headwall installation, which involves major […]
