The West Fourth Street–Washington Square station is an express station and transfer stop on the IND Sixth Avenue and IND Eighth Avenue Lines of the New York City Subway, located at the intersection of West Fourth Street and Sixth Avenue (Avenue of the Americas) in Greenwich Village, Manhattan. It is served by: A, D, E, and F trains at all times; B and M trains on weekdays; C train at all times except late nights; and <F> train during rush hours in the peak direction. History Construction New York City mayor John Francis Hylan's original plans for the Independent Subway System (IND), proposed in 1922, included building over of new lines and taking over nearly of existing lines, which would compete with the IRT and the Brooklyn–Manhattan Transit Corporation (BMT), the two major subway operators of the time. The New York City Board of Transportation (NYCBOT) gave preliminary approval to the IND Eighth Avenue Line in 1924. This line consisted of a corridor connecting Inwood, Manhattan, to Downtown Brooklyn, running largely under Eighth Avenue but also paralleling Greenwich Avenue and Sixth Avenue in Lower Manhattan. An additional line, the IND Sixth Avenue Line, was approved in 1925, running from Midtown Manhattan underneath Sixth Avenue, Houston Street, Essex Street, and the Rutgers Street Tunnel to Downtown Brooklyn. The IND Sixth Avenue Line was designed to replace the elevated IRT Sixth Avenue Line. The transfer hub between the Eighth Avenue and Sixth Avenue lines, at Sixth Avenue and West 4th Street in Greenwich Village, was named "West Fourth Street" as opposed to merely "Fourth Street" because the planners of the Independent Subway System believed there would be confusion between this station and "South Fourth Street", a proposed transfer station on the never-built IND Second System in Williamsburg, Brooklyn. Work on the IND Eighth Avenue Line began in 1925. The first portion of the Sixth Avenue Line to be constructed, comprising the Houston–Essex Street Line south of the West Fourth Street station, officially started in May 1929. Because of complexities in the construction of the Midtown section of the Sixth Avenue Line, that section did not begin construction until April 1935. Opening and modifications The upper level of the West Fourth Street station opened on September 10, 1932, as part of the city-operated Independent Subway System (IND)'s initial segment, the Eighth Avenue Line between Chambers Street and 207th Street. When the station opened