Culver Line (surface) in the context of "Culver Viaduct"

The IND Culver Line (formerly BMT Culver Line) is a rapid transit line of the B Division of the New York City Subway, extending from Downtown Brooklyn south to Coney Island, Brooklyn, New York City, United States. The local tracks of the Culver Line are served by the F service, as well as the G between Bergen Street and Church Avenue. The express tracks north of Church Avenue are used by the <F> train during rush hours in the peak direction. The peak-direction express track between Ditmas Avenue and Avenue X has not seen regular service since 1987.

The line is named after Andrew Culver, who built the original Culver Line that preceded the current subway line. The present-day line was built as two unconnected segments operated by the Independent Subway System (IND) and Brooklyn–Manhattan Transit Corporation (BMT). The northern section of the line, between Jay Street–MetroTech and Church Avenue, is a four-track line that was built for the IND in 1933, running primarily underground except for a short elevated section over the Gowanus Canal.