CONEY ISLAND YARD Located on Avenue X in Brooklyn, the Coney Island Yard is the largest yard and maintenance facility in New York's subway system. It mainly houses Bs, Ns, Fs, Qs and Ms, but cars from every line in the city are housed here for repairs, maintenance and overhauls. It has many names BAY 50th, The Dewey Yard, The F yard all for different sections of the yard. Back to Yards and Layups | Home |  Artists |  Crews |  History |  Links |  E mail | Glossary |