The IND Sixth Avenue Line is a rapid transit line of the B Division of the New York City Subway in the United States. It runs mainly under Sixth Avenue in Manhattan, and continues south through the Rutgers Street Tunnel to Brooklyn. It was the last trunk line of the Independent Subway System, completed in 1940. The IND B, D, F, and BMT M, which use the Sixth Avenue Line through Midtown Manhattan, are colored bright orange.