are measured, is BMT Eastern. It is located in Civic Center, Manhattan, at the intersection of the line of the Brooklyn Bridge and the Chambers Street station on the Nassau Street Line; the measurements were made using the length of the now-dismantled Brooklyn Bridge and Fulton Street Lines. The Franklin Avenue Line's chaining measurement ties, or continues off the Brooklyn Bridge and Fulton Street Lines' original measurement, at the Franklin Avenue station. In terms of railroad directions, "north" is toward Franklin Avenue and generally corresponds to geographical north. The line's signals are controlled by the DeKalb Avenue Tower, located at the DeKalb Avenue station in Downtown Brooklyn. Track numbering Services The BMT Franklin Avenue Line is exclusively served by the Franklin Avenue Shuttle at all times. Station listing Notes References External links Brooklyn–Manhattan Transit Corporation New York City Subway lines Railway lines opened in 1878