The station has three tracks: two outer, stopping tracks and one center track that bypasses the station. Part of the trackways to the BMT el still remain as this line curves south into the tunnel to Grant Avenue west of 80th Street. This segment can be found just east of the intersection of Liberty Avenue and 76th Street, as the newer structure curves south; an older part of the structure, which does not curve, continues for a few feet, with no tracks, on the north side of Liberty Avenue. The line enters the tunnel portal at the Brooklyn–Queens border.