The Cathedral Parkway–110th Street station is a local station on the IND Eighth Avenue Line of the New York City Subway. It is located in the Upper West Side and Morningside Heights, Manhattan, at West 110th Street and Frederick Douglass Boulevard at the northwest corner of Central Park. The station is served by the B on weekdays, the C train at all times except nights, and the A train during late nights only. History The 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. Construction of the whole line cost $191.2 million (equivalent to $ million in ). While the IRT Broadway–Seventh Avenue Line already provided parallel service, the new Eighth Avenue subway via Central Park West and Frederick Douglass Boulevard provided an alternative route. Under the 2015–2019 Metropolitan Transportation Authority (MTA) Capital Plan, the station underwent a complete overhaul as part of the Enhanced Station Initiative and was entirely closed for several months. Updates included cellular service, Wi-Fi, USB charging stations, interactive service advisories and maps. A request for proposals for the 72nd Street, 86th Street, Cathedral Parkway–110th Street, and 163rd Street–Amsterdam Avenue stations was issued on June 1, 2017, and the New York City Transit and Bus Committee officially recommended that the MTA Board award the $111 million contract to ECCO III Enterprises in October 2017. As part of the renovations, the station was closed from April 9, 2018 to September 2, 2018. The southbound platform opened first, on September 2, followed by the northbound platform on September 4. Station layout This underground station has four tracks and two side platforms. The two center express tracks are used by the A train during daytime hours and the D train at all times. The platforms have no trim line, but there are mosaic name tablets reading "110TH STREET CATHEDRAL P'KWAY." in white sans-serif lettering broken into two lines on a midnight blue background and black border. Grey (previously blue) I-beam columns run at regular intervals with alternating ones having the standard black station name plate in white lettering. Toward the southern end of the station, the northbound express track descends below the other three tracks of the Eighth Avenue Line. At the south end of the station, two staircases from each platform go up to a mezzanine above the tracks that