23rd Street station (IRT Third Avenue Line)
23rd Street was an express station on the demolished IRT Third Avenue Line. It had two levels. The lower level was served by local trains and had two tracks and two side platforms. It was built first. The upper level was built as part of the Dual Contracts and had one track with two side platforms and served express trains. This station closed on May 12, 1955, with the ending of all service on the Third Avenue El south of 149th Street.
