22nd Street station (Caltrain)
22nd Street is a Caltrain commuter rail station located south of 22nd Street beneath the I-280 freeway between the Dogpatch and Potrero Hill neighborhoods of San Francisco, California. The only below-grade Caltrain station, it is bracketed by two tunnels which take the line under the eastern slope of Potrero Hill. The station is reached only by stairways from 22nd Street and Iowa Street – there are no ramps or elevators between the platforms and street level – and is thus not accessible. The narrow stairways create bottlenecks, especially when northbound trains arrive.
The station opened when the Southern Pacific Railroad built the Bayshore Cutoff in 1907. The station was originally known as 23rd Street. The former wooden stairways were replaced with metal stairs in 2007.
