Passing under the Carquinez Bridge, which carries Interstate 80 across the Carquinez Strait and to, eventually, Teaneck, New Jersey, is Amtrak San Joaquin 712. Amtrak Non-Powered Control Unit 90278 (the former AMTK F40PH 278) leads this train as it heads from Oakland Jack London station to Bakersfield, with Amtrak California F59PHI 2010 providing muscle from the rear. This train consists of Siemens "Venture" cars, built in nearby Sacramento. (Crockett, California – June 24, 2025)
From one train each way in 1973 between Bakersfield and Oakland when it started up, this line as expanded to six trips daily; four to Oakland and two to Sacramento.