Central Subway


Extending Muni’s T Third Line to connect San Francisco’s southeast neighborhoods with SoMa, downtown and Chinatown. Follow us for project news and updates.

Photos and Videos by @Central_Subway

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Tonight at 8, 4th b/w Howard & Folsom will reduce to one lane so we can install a rebar cage into this excavation:

  • 1178 days ago via site
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With tunneling about to begin, signs and celebrates the future of transit in SF.

  • 1188 days ago via site
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Taken from a crane, here's a bird's eye view of our Union Square construction site.

  • 1195 days ago via site
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Thanks for visiting us this morning & supporting public transit in SF. ( was beaming.)

  • 1210 days ago via site
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A group of engineering students and our lead tunnel designer take a look inside a segment of

Check out this prize wheel! come to for a Central Subway lunch event and a chance to win great prizes.

Beneath 4th Street, tunnel engineer Sarah Wilson describes the tunnel construction process to reporters.

Join us and Friday at lunch to celebrate & ! Stop by 11am-2pm, 399 4th St.

  • 1226 days ago via site
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PHOTO: On Ellis Street, crews are excavating and stabilizing a shaft that will be used for ground improvements.

  • 1230 days ago via site
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PHOTO: A view from above: Tunneling preparation is underway at the future Union Square/Market Street Station site.

  • 1281 days ago via site
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PHOTO: This week crews worked to build a ramp into the tunnel launch box, where tunneling will begin.

  • 1306 days ago via site
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Tunneling begins this year within this excavation, called a launch box. Launch box construction remains underway.

  • 1313 days ago via site
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One lane of 4th Street b/w Stillman and Bryant is now reopened to traffic (Stillman is b/w Harrison and Bryant).

  • 1352 days ago via site
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Muni fun fact: The historic F Stockton streetcar traveled a similar route to the Central Subway #throwbackthursday

  • 1413 days ago via site
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Congrats ! and were overjoyed when the hometown team clinched the NLDS title:

  • 1419 days ago via site
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Thanks , , , , , for supporting #transit in SF.

  • 1420 days ago via site
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TBMs consist of a cutter head, a shield and a very long tail. This part is a component the cutter head.

  • 1426 days ago via site
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We're installing decorative banners along Stockton Street. Shop during Central Subway construction!

  • 1440 days ago via site
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Featured photo: This block of Stockton Street closed to traffic today. Drivers - Detour info here: ow.ly/cBgNc

  • 1493 days ago via site
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Featured construction photo: The 10-foot-tall, 15-ton, claw-like hydraulic excavator known as a "grab."

  • 1526 days ago via site
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