Intermodal Transport refers to the movement of freight by two or more modes of transportation, such as by ground and rail. An intermodal terminal is the transfer station where the truck trailers or shipping containers move from rail lines to truck or vise versa. The transfers are done by cranes straddling the rail lines, a choreographed process running 24 hours a day.

In Southern California there are 7 intermodal terminals, 4 operated by Union Pacific Railroad, and 3 operated by the competing Burlington Northern/Sante Fe Railroad. This photo essay documents the UP and BNSF terminals in Commerce and the BNSF intermodal facility in San Bernardino.