The West Side Branch of the original subway line was extended to 225th Street on January 14, 1907, the structure of the 221st Street station was dismantled and was moved to 230th Street for a new temporary terminus. This station stopped being the terminal of the line, when on January 27, 1907, the line was extended to the new temporary terminal at 230th Street. In 1948, platforms on the IRT Broadway–Seventh Avenue Line from 103rd Street to 238th Street were lengthened to to allow full ten-car express trains to stop at this station. Previously, the station could only hold six-car local trains. The platform extensions were opened in stages. On July 9, 1948, the platform extensions at stations between 207th Street and 238th Street were opened for use at the cost of $423,000.
Station layout
This elevated station has three tracks and two side platforms. The center track is not used in revenue service. The southern half of the platforms has beige windscreens and red canopies with green frames and support columns while the northern half has black, steel, waist high fences and lampposts. The station signs are in the standard black name plates in white lettering. The 1991 artwork here, by Wopo Holup, is called Elevated Nature I-IV. Portions are also located at four other stations on this line. Marble Hill–225th Street is the northernmost subway station in Manhattan, and is one of two subway stations in Manhattan that are not located on Manhattan Island itself, the other one being Roosevelt Island on the.
Exits
All fare control areas are at platform level and there are no crossovers or crossunders. Both platforms have a station house, but only the southbound one is active. It has a turnstile bank, token booth, and one staircase going down to 225th Street and the northwest corner of Broadway. Access to and from the northbound platform is via two full-height turnstiles, one exit-only and the other entry-exit, and one staircase going down to the east side of Broadway across from the northwest corner of 225th Street.
Location
This station is less than from the Marble Hill station on Metro-North Railroad's Hudson Line. Just south of the station, the IRT Broadway–Seventh Avenue Line crosses the Broadway Bridge onto the island of Manhattan. This station today and the neighborhood it serves reside on the north shore of the Harlem River Ship Canal, also known as Spuyten Duyvil Creek, and are thus geographically on the mainland. However, the neighborhood was formerly part of the island of Manhattan. The canal was constructed in 1895, separating the neighborhood from the rest of the island. After the original creek bed was filled in, Marble Hill became part of the mainland, although it is still considered part of Manhattan for administrative and political purposes.
