m31, m57 | ||||||
|---|---|---|---|---|---|---|
| 57th Street Crosstown Line | ||||||
A 2019 XD40 (7597) on the M31 and a 2021 LFS HEV (9676) on the Upper West Side-bound M57 | ||||||
| Overview | ||||||
| System | MTA Regional Bus Operations | |||||
| Operator | Manhattan and Bronx Surface Transit Operating Authority | |||||
| Garage | Tuskegee Airmen Depot (M31) Michael J. Quill Depot (M57) | |||||
| Vehicle | Nova BusLFS HEV (both routes) New FlyerXcelsior XD40 New FlyerXcelsior XE40 (M57 only) Nova BusLFS Articulated New FlyerXcelsior XD60 (M31 supplemental service) | |||||
| Route | ||||||
| Locale | Manhattan, New York, U.S. | |||||
| Communities served | Upper West Side,Riverside South,Hell's Kitchen,Midtown,Sutton Place,Upper East Side | |||||
| Start | M31:Hell's Kitchen –54th Street and 11th Avenue M57:Upper West Side –72nd Street and Amsterdam Avenue | |||||
| Via | 57th Street M31: York Avenue M57: West End Avenue | |||||
| End | M31:Upper East Side –1st Avenue and 92nd Street M57:Sutton Place –1st Avenue and 55th Street | |||||
| Length | 2.7 miles (4.3 km) (eastbound M57) 3.0 miles (4.8 km) (westbound M57) 3.8 miles (6.1 km) (M31) | |||||
| Service | ||||||
| Operates | M31: 5 a.m. (7 a.m. weekends) to 12:30 a.m.[1] M57: 5 a.m. (6:30 a.m. weekends) to 12:30 a.m.[2] | |||||
| Ridership | M31: 2,447,050 (2024)[3] M57: 1,704,084 (2024)[3] | |||||
| Transfers | Yes | |||||
| Timetable | M31M57 | |||||
| ||||||
TheM31 andM57bus routes constitute the57th Street Crosstown Line, apublic transit line inManhattan,New York City, running primarily along57th Street. The M31 runs between11th Avenue and 54th Street inHell's Kitchen to1st Avenue and 92nd Street inYorkville. The M57 runs from72nd Street andAmsterdam Avenue on theUpper West Side toSutton Place and57th Street in Sutton Place.[4][5]
The M31 and M57 are legally operated by theManhattan and Bronx Surface Transit Operating Authority, a wholly owned subsidiary ofNew York City Transit, whose bus routes were consolidated intoMTA Regional Bus Operations.

For most of its length, the M31 uses 57th Street to travel crosstown, then usesYork Avenue to travel uptown to 92nd Street andFirst Avenue.[1][6] At its western end, the M31 turns left onEleventh Avenue, then left on 54th Street to terminate; eastbound buses return to 57th Street usingTenth Avenue.[1][6] At its northern/eastern end, the M31 goes left on 91st Street then right on First Avenue, terminating along 92nd Street before returning southbound on York Avenue.[6] During morning rush hours, one articulated bus runs on the M31.
The M57 mostly duplicates the M31 along 57th Street.[2][6] The only major difference is that the M57 uses West End Avenue to reach its western terminus at72nd Street and Amsterdam Avenue. At its eastern end, the M57 reaches First Avenue, eastbound buses turn on 1st, then terminate. Westbound buses then use Sutton Place, 55th Street, and First Avenue to access 57th Street, where they turn back crosstown.[6]
The M57 operates out ofMichael J. Quill Depot whereas the M31 operates out of theTuskegee Airmen Depot.
East Side Omnibus Corporation began operating bus route (M11) on June 25, 1933.[4]
The route was renumbered as the M31 on July 1, 1974, as part of the renumbering of bus routes in Manhattan.[7][8]
Buses were introduced on April 17, 1934.[4] Service formerly went betweenColumbus Circle andSutton Place.[9]Fifth Avenue Coach Company began operating bus #20 on March 15, 1937, fromSutton Place to12th Avenue to provide river-to-river service for Sutton Place residents at five-minute headways.[9]
The route, formerly numbered M20, became M28 on July 1, 1974, as part of the renumbering of bus routes in Manhattan.[10][7][8]
On September 10, 1989, the M28 (57th Street Crosstown) and M103 (59th/60th Street Crosstown) routes were merged to form the M57. M57 buses began operating from 57th Street and Sutton Place South to Broadway and 72nd Street, running via 57th Street and West End Avenue.[11]
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