Bay Shore is a major railroad station along the Montauk Branch of the Long Island Rail Road (LIRR). It is located on Park Avenue and Oak Street north of Suffolk CR 50 (Union Boulevard) and west of Fourth Avenue, in Bay Shore, New York.
Bay Shore Station was built by the South Side Railroad of Long Island in 1868, was replaced in 1882, and replaced again on July 17, 1912, in the style typical of stations such as Riverhead, Manhasset, Northport, and Mineola. The entrance to the station once had decorative pillars on the sides, and a railroad hotel once existed behind the station plaza. It is one of the few stations on the LIRR with two station buildings. The larger building is for the westbound platform and the smaller one is for the eastbound platform. An underground pedestrian tunnel once connected the two station houses until a pedestrian bridge was built in 2009.
This station has two high-level side platforms each 12 cars long. The north platform, adjacent to Track 1, is generally used by westbound trains. The south platform, adjacent to Track 2, is generally used by eastbound trains. The Montauk Branch has two tracks at this location.