Transbay Transit Center

  • Arup’s unique combination of consulting services is providing the Transbay Transit Center architecture team and owner invaluable guidance.
  • This six-level transit center will be the Northern terminus for six high-speed and commuter rail terminal tracks and the intermodal hub for five major transit providers.
  • A graceful cable-stayed bridge will provide a direct transbay bus connection to the Center from the Bay Bridge.

Arriving just as Bay Area traffic reaches critical volumes, the new Transbay Transit Center will provide the capacity of a new subway station in the heart of downtown San Francisco. With the potential to process up to 20,000 bus passengers in one hour — more than the capacity of the entire Bay Bridge — the new Transbay Transit Center will be not only functional, but a building of grace and elegance as well as an important icon for the Bay Area. Arup’s unique combination of consulting services provided the architectural team and the owner with real-world guidance and engineering inspiration.

Arup’s state-of-the art design provides for a vibrant new mix of residential and commercial uses in the heart of downtown San Francisco. It spans four city blocks and provides intercity, regional, and commuter bus services for five major transit providers at the ground and bus deck levels. Underground, the new transit center will have three 1,000-foot-long train platforms, providing four terminal tracks for the new High-Speed Rail service from Southern California and two tracks for the Caltrain commuter rail service.

Our San Francisco office’s involvement began in 1999 with a planning study for the metropolitan transportation authority. From there we provided concept validation for the project in June 2008, ultimately providing complete engineering design, as well as bid phase and construction administration services though project completion in late 2017. In total, Arup is providing complete civil, geotechnical, and bridge/highway engineering design services, as well as leading the transport and pedestrian planning, structural risk analyses, pedestrian modelling, fire and life-safety review, tunnel ventilation design, and rail coordination for this landmark addition to San Francisco’s mass transit infrastructure.

Note: Highly publicized litigation related to the differential settlement of adjacent building, Millennium Tower, has recently been filed which involves the Transbay Terminal.  The  Transbay Joint Powers Authority (TJPA) has denied any responsibility in its public statement. Arup was not involved in the design of the Millennium Tower. 

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  • Aerial view of Transbay Transit Center. Credit Pelli Clark Pelli.Open gallery

    The center will act as a civic landmark and the hub of a new area of development in San Francisco.

  • Aerial view of the Transbay Transit Center under constructionOpen gallery

    Arriving just as Bay Area traffic reaches critical volumes, the new Transbay Transit Center will provide the capacity of a new subway station in the heart of downtown San Francisco.