the line in the late 1950s, all local trains were sent up the Broadway Branch, and all express trains were sent up the Lenox Avenue Line. Accompanying these changes were the lengthening of platforms, new subway cars, and the closing of the 91st Street station. One other major change in service was the implementation of skip-stop service on the 1 and 9 trains in 1989, but this was discontinued in 2005 as few people benefited. The Cortlandt Street station, destroyed following the September 11 attacks, was completely rebuilt and reopened in September 2018 as WTC Cortlandt. The original South Ferry station, a five-car balloon loop, was also replaced with a two-track terminal in 2009; the new South Ferry terminal was rebuilt in 2017 after being flooded during Hurricane Sandy in 2012. Description Also known as the IRT West Side Line, since it runs along the west side of Manhattan, the IRT Broadway–Seventh Avenue Line runs from Van Cortlandt Park–242nd Street in the Bronx, close to the city line with Westchester, to South Ferry in Lower Manhattan, the southernmost point in the borough. Along the way, the line serves places such as Times Square, Lincoln Center, Columbia University, and the City College of New York. The portion of the line north of 42nd Street was built as part of the first subway in New York in 1904. Train services that use the IRT Broadway–Seventh Avenue Line are colored on subway signage and literature. The line is served by the , which operate together over much of the line. Between 1989 and 2005, the 1 train operated as a skip-stop service in Upper Manhattan in tandem with the . The 1 and 9 alternated skipping stops along the line, with some stops having both trains stop. This was intended to speed commutes without having to have express service run down the line. This service was discontinued after May 27, 2005; from 1994 onward, this skip-stop separation existed only during rush hours. A third track along much of the line north of 96th Street has been used in the past for peak direction express service, at least between 96th Street and 137th Street. This center track is currently used only during construction reroutes. There is another unused third track between Dyckman Street and Van Cortlandt Park–242nd Street. Three yards have connections to the line. The 240th Street Yard is located between Van Cortlandt