Richmond BART/Amtrak located at 1700 Nevin Ave., is a primary hub served by Alameda-Contra Costa Transit District (AC Transit). AC Transit serves the western portions of Alameda and Contra Costa counties in the East Bay portion of the San Francisco Bay Area. AC Transit service is available in the the following cities and unincorporated areas: Oakland, Fremont, Hayward, Berkeley, Richmond, San Leandro, Alameda, Castro Valley, Newark, San Pablo, El Cerrito, San Lorenzo, Ashland, Albany, Cherryland, El Sobrante, Piedmont, Fairview, Emeryville, Kensington, and East Richmond Heights. The District's bus lines also serve parts of some other East Bay communities, including Milpitas, Pinole, and Union City. AC Transit also operates “Transbay” routes across San Francisco Bay to San Francisco and selected areas in San Mateo and Santa Clara counties.