The Dumbarton Rail Corridor is a proposed transbay passenger rail line which would reuse the right-of-way that was initially constructed from 1907–1910 as the Dumbarton Cut-off. The Dumbarton Cut-off includes the first structure to span San Francisco Bay, the 1910 Dumbarton Rail Bridge, although the vintage Cut-off bridges would likely be replaced prior to activating new passenger service. Dumbarton Rail Corridor would provide service between Union City in the East Bay and Menlo Park on the Peninsula, with train service continuing to both San Francisco and San José along the existing Caltrain tracks. It has been in the planning stages since 1988, and would be the first above-ground transbay rail line since Key System electric trains stopped running on the lower deck of the Bay Bridge in 1958, and the first new transbay crossing of any kind since the completion of the Transbay Tube in 1974.
DRC would reuse the right-of-way initially constructed in 1910, although the vintage Dumbarton Rail Bridge would likely be demolished and replaced.
Dumbarton Rail Cut-off bridge over US 101 in Menlo Park. Note the bridge is built for a single track, but the concrete piers are sized to accommodate double-track service.
West side of Union City BART station
The Dumbarton Rail Bridge in 2010. View facing east; concrete trestle and burned timber trestle in the foreground. Hetch Hetchy Project water pipelines 1&2 on the left.
Union City station is a Bay Area Rapid Transit (BART) station in Union City, California. The station sits near Decoto Road east of Alvarado-Niles Road, directly behind the James Logan High School campus. The station is served by the Orange and Green lines. Local bus service is provided by Union City Transit and AC Transit.
Union City station platforms in 2017
Main entrance and bus bays in 2013
