M31 and M57 buses

m31, m57
57th Street Crosstown Line
Two 2021 Nova Bus LFS HEVs: 9635 on the Yorkville-bound M31 in June 2024, and 9676 on the Upper West Side-bound M57
Overview
System	MTA Regional Bus Operations
Operator	New York City Transit Authority
Garage	Tuskegee Airmen Depot (M31) Michael J. Quill Depot (M57)
Vehicle	Nova Bus LFS HEV New Flyer Xcelsior XD40 New Flyer Xcelsior XE40 (M57 only)
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: 2,320,026 (2023)[3] M57: 1,626,348 (2023)[3]
Transfers	Yes
Timetable	M31 M57
Route map ← M23 SBS ← M50  {{{system_nav}}}  M34 SBS→ M60 SBS →

The M31 and M57 bus routes constitute the 57th Street Crosstown Line, a public transit line in Manhattan, New York City, running primarily along 57th Street. The M31 runs between 11th Avenue and 54th Street in Hell's Kitchen to 1st Avenue and 92nd Street in Yorkville. The M57 runs from 72nd Street and Amsterdam Avenue in the Upper West Side to Sutton Place and 57th Street in Sutton Place.^[4][5]

The M31 and M57 are operated by MTA Regional Bus Operations under the New York City Transit brand.