The B69 is a bus route that constitutes a public transit line operating in Brooklyn, New York City, running along 7th Avenue and Vanderbilt Avenue between Kensington and Dumbo. The B69 is operated by the MTA New York City Transit Authority. Its precursor was a streetcar line that began operation in 1869, and was known as the Vanderbilt Avenue Line. The route became a bus line in 1950. Route description The B69 bus route starts at McDonald Avenue and Cortelyou Road in Kensington. This terminus is shared with the B67. Then the two routes proceed up McDonald Avenue to 20th Street. Here, buses use 19th Street going north and 20th Street going south until 7th Avenue, where the two routes turn along 7th Avenue. From there, the lines run along that corridor, serving businesses and connecting to multiple bus and subway lines until Flatbush Avenue, where the B67 heads north on Flatbush Avenue. The B69, meanwhile, heads south on Flatbush, and goes around Grand Army Plaza to head back north on Vanderbilt Avenue. Once there, buses run up the length of the street until it meets Flushing Avenue, and it runs west on Flushing Avenue. This segment is shared with the B57. At Navy Street, the B69 turns onto Sands Street and runs along the street until its terminus at Pearl Street, just south of the York Street station. History The line along Vanderbilt Avenue from Myrtle Avenue south to Prospect Park was built in 1869 by the Brooklyn, Hunter's Point and Prospect Park Railroad as a branch of the Crosstown Line, connecting Williamsburg to the park. The branch was not profitable, and was bought (south of Park Avenue) by the Park Avenue Railroad, which then turned it into a line to the Fulton Ferry, which opened on May 3, 1871. The tracks of the Brooklyn City and Newtown Railroad (DeKalb Avenue Line) were used from the ferry south to Concord Street, heading eastbound on Water Street and Bridge Street and westbound on Front Street and Gold Street. From there, the line turned east along Concord Street to Navy Street, then traveled on the Crosstown Line tracks south along Navy Street for a block then heading east on Park Avenue. The line would then continue on its own trackage along Vanderbilt Avenue to Grand Army Plaza. Later on, the line was extended south on Prospect Park West to Greenwood Cemetery