The West Side Highway is a mostly surface section of New York State Route 9A that runs from West 72nd Street along the Hudson River to the southern tip of Manhattan in New York City. It replaced the West Side Elevated Highway, built between 1929 and 1951, which was shut down in 1973 due to neglect and lack of maintenance, and was dismantled by 1989. The term "West Side Highway" is often mistakenly used, particularly by the news media traffic reporters, to include the roadway north of 72nd Street which is properly known as the Henry Hudson Parkway.The current highway was complete by 2001, but required some reconstruction due to damage sustained in the 9/11 attacks. It uses the surface streets that existed before the elevated highway was built: West Street, Eleventh Avenue and Twelfth Avenue. A short section of 12th Avenue still runs between 125th and 138th Streets, under the Riverside Drive Viaduct. Eleventh Avenue is a separate street north of 22nd Street. The portion between West 42nd Street and Canal Street is part of the Lincoln Highway.Route descriptionThe highway is a six-to-eight lane urban boulevard, with the northernmost section, from 59th Street to 72nd Street (where it becomes the Henry Hudson Parkway), elevated above a former rail yard adjacent to tracks still used by Amtrak. Trucks and buses are allowed only on the surface section. The West Side Highway's surface section takes three names: West Street from the Battery Park Underpass north to Tenth Avenue, then 11th Avenue to 22nd Street, and finally 12th Avenue to 59th Street.
