 The Ninth Avenue Railroad, which owned the trackage on 53rd Street between Seventh and Ninth Avenues, was split from New York Railways, the Metropolitan's successor, in 1919.The Broadway and Amsterdam Avenue Line and Sixth and Amsterdam Avenues Line were discontinued, while the Broadway and Columbus Avenue Line remained, using trackage rights over the Ninth Avenue's trackage on 53rd Street and Ninth Avenue south of Broadway to reach Columbus Avenue.The Ninth Avenue Railroad brought back the old 53rd Street shuttle to Sixth Avenue.