B45 (New York City bus)

b45
St. Johns Place Line
A 2007 Orion VII OG HEV (6801) on the Downtown Brooklyn-bound B45 near Atlantic Terminal in March 2019. This bus is retired.
Overview
System	MTA Regional Bus Operations
Operator	New York City Transit Authority
Garage	East New York Depot
Vehicle	New Flyer Xcelsior XD40 New Flyer Xcelsior XDE40 OBI Orion VII NG HEV
Began service	1877 (streetcar) 1947 (bus)
Route
Locale	Brooklyn, New York, U.S.
Communities served	Crown Heights, Prospect Heights, Fort Greene, Boerum Hill, Downtown Brooklyn
Landmarks served	Brooklyn Borough Hall, Atlantic Terminal, Barclays Center
Start	Downtown Brooklyn– Court Street
Via	St. Johns Place[1]
End	Crown Heights– Ralph Avenue
Length	4.8 miles (7.7 km)
Other routes	B65 Bergen/Dean Streets
Service
Operates	All times, except late nights
Annual patronage	909,481 (2023)[2]
Transfers	Yes
Timetable	B45
Route map ← B44 SBS    B46 SBS →

The B45 is a bus route that constitutes a public transit line operating in Brooklyn, New York City, mainly along Atlantic Avenue, Washington Avenue, Sterling Place, and St. Johns Place between Downtown Brooklyn and Crown Heights. It is operated by the MTA New York City Transit Authority. Its precursor was a streetcar line that began operation in 1877, and was known as the St. Johns Place Line. The route became a bus line in 1947.