The East Shore and Suburban Railway (E&SR) was a formerly independent unit of the historic San Francisco Bay Area Key System which ran streetcar trains in Richmond, California, San Pablo, and El Cerrito.
The system's initial line was built between Point Richmond and the Southern Pacific depot and opened on July 28, 1904.
This forced riders to cross the tracks on foot and transfer to another car to make the complete trip.
This setup would persist until April 1909 when an underpass was installed to take Macdonald Avenue under the tracks and connecting the two sections of the line.
[4] The East Shore and Suburban was merged into the San Francisco-Oakland Terminal Railways Company along with the Key System and Oakland Traction Company in 1912, consolidating most streetcar operations in the East Bay.