Marble Hill – 225th Street (IRT Broadway – Seventh Avenue Line)

Marble Hill–225th Street is a local station on the IRT Broadway–Seventh Avenue Line of the New York City Subway. Located at the intersection of Broadway and 225th Street in Marble Hill, Manhattan, it is served by the 1 train at all times. It is the northernmost subway station in Manhattan, and is one of two subway stations in Manhattan that is not located on Manhattan Island itself (the other one being Roosevelt Island).HistoryThe West Side Branch of the original subway line was extended to 225th Street on January 14, 1907, the structure of the 221st Street 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 514 feet to allow full ten-car express trains to platform. Previously the stations could only platform 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.