[1] Because Central Park was designated in 1853, the Sixth Avenue Line was only built to 59th Street.
This long-dormant clause was used in 1894, when the Common Council ordered the company, then leased to the Metropolitan Street Railway, to build in what had become Lenox Avenue from 110th Street (the northern boundary of Central Park) to the Harlem River.
[2] The Metropolitan used the line to experiment with conduit electrification,[3] opening on July 9, 1895.
[2] The Metropolitan soon decided that it would convert all of its lines to the conduit system, being less costly than cable traction.
[6][7] The car house was rebuilt as a bus garage by the New York City Omnibus Corporation in 1938 and 1939,[8][9] and is still used by the New York City Transit Authority as the Mother Clara Hale Depot.