Link21 (Transbay Rail Crossing)

Link21 (Transbay Rail Crossing)

United States

Link21 is a long-range transportation program sponsored by the San Francisco Bay Area Rapid Transit District (BART) and the Capitol Corridor Joint Powers Authority (Capitol Corridor) to transform the passenger rail network serving the 21-county Northern California Megaregion, which includes the greater San Francisco Bay Area, the Monterey Bay area, the Sacramento area, and the Northern San Joaquin Valley.

For decades, transportation leaders have recognized the need for a new transbay rail crossing between Oakland and San Francisco. The existing transbay corridor includes BART, the San Francisco-Oakland Bay Bridge, buses, and ferry service.

The existing transbay corridor is currently the most congested corridor in the Northern California Megaregion — and one of the most congested corridors in the United States.

Regional Rail does not currently cross the Bay in this corridor. However, there are many Regional Rail riders with destinations across the Bay who would benefit from a direct rail connection.

Therefore, at the core of the Link21 Program is a new transbay rail crossing project between Oakland and San Francisco. The project will provide one or more passenger rail services across the Bay.

In addition to the new transbay rail crossing, the Link21 Program will include many other projects to improve the reliability, frequency, capacity, and hours of service for Northern California's rail network.

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