B45 (New York City bus)

The St. Johns Place Line is a public transit line in Brooklyn, New York, mainly along Atlantic Avenue, Washington Avenue, Sterling Place, and St. Johns Place between Downtown Brooklyn and Crown Heights. Originally a streetcar line, it is now the B45 bus route, operated by the New York City Transit Authority.

In 1877, the Atlantic Avenue Railroad leased its main line east of Fifth Avenue (just east of Flatbush Avenue) to the Long Island Rail Road as a branch of their system to downtown Brooklyn. However, the Atlantic Avenue Railroad still wanted to serve the area east of downtown, and it opened a new track on the south side of Atlantic Avenue from Fifth Avenue to Washington Avenue, and then a line along Washington Avenue and Sterling Place (then Butler Street) to Nostrand Avenue, on June 11, 1883.

The rest of the line was built by the Nassau Electric Railroad, which had the right to build from Hamilton Ferry to City Line along Union Street, St. Johns Place (then Douglass Street), East New York Avenue, and Liberty Avenue. The Nassau Electric leased the Atlantic Avenue on April 5, 1896, and never built the portion between the end of the Union Street Line at Grand Army Plaza and the crossing of their Ocean Avenue Line at Rogers Avenue, one block west of Nostrand Avenue. Instead, the Atlantic Avenue Railroad's Butler Street Line was truncated to Rogers Avenue and extended via St. Johns Place and East New York Avenue, and, once the lease was consummated, cars were operated from Fulton Ferry to Sheepshead Bay (leaving the line at Rogers Avenue) and to City Line, where they soon connected with the Long Island Electric Railway and New York and Long Island Traction Company.

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