M11 (New York City bus)

The Ninth and Amsterdam Avenues Line or Ninth Avenue Line is a surface transit line in the New York City borough of Manhattan, running mostly along Ninth Avenue and Amsterdam Avenue from Lower Manhattan to Manhattanville. Originally a streetcar line operated by the Manhattan and Bronx Surface Transit Operating Authority, it is now the M11 9 (Columbus) and 10 (Amsterdam) Avs bus route operated by the New York City Transit Authority.

The M11 bus route begins at Bethune Street (Abingdon Square) in Greenwich Village, and starts out by heading northbound on Greenwich Street and southbound on Hudson Street. Where the route crosses 14th Street, Hudson Street becomes Ninth Avenue, while the northbound direction jogs west on 14th Street to reach Tenth Avenue. This one-way pair on Ninth and Tenth Avenues, which become Columbus Avenue and Amsterdam Avenue north of 59th Street, continues until 110th Street, where the southbound route joins the northbound direction on Amsterdam Avenue. Several turns - west on 135th Street, north on Riverside Drive, and west on 145th Street - take the M11 to its end at Riverbank State Park. Passengers can transfer to the subway at 137th Street – City College.