Castro Valley station

Castro Valley station is a Bay Area Rapid Transit (BART) stop situated within the central median of Interstate 580 in Castro Valley, California. The station's entrance plaza, parking facilities, and bus transfer zone are positioned on the highway's northern side; access to the fare lobby beneath the island platform is provided via a tunnel running under the westbound lanes. The Blue Line serves this station.

During construction in 1993, a 96-unit transit-oriented apartment complex was established on the northwest corner of the station area, which also involved the preservation of a historic Victorian residence. The station officially commenced operations on May 10, 1997, coinciding with the extension to Dublin/Pleasanton station. Between March 2003 and March 2010, it functioned as the eastern endpoint for AC Transit route M, offering transbay service to Hillsdale via the San Mateo–Hayward Bridge.

By 2024, BART has identified "significant market, local support, and/or implementation barriers" that have postponed development plans for the surface parking areas at Castro Valley station. Consequently, such redevelopment initiatives are not anticipated to occur until at least the mid-2030s.