Weekend Rails: July 21 - 22

Several Brooklyn subway lines will be undergoing maintenance this weekend—check out the list of service changes below before you leave the house.

• Coney Island-bound Q trains will run express from Prospect Park to Sheepshead Bay.

• 57 St/7 Ave.-bound Q trains will run via the R from DeKalb Ave. to Canal St.

• There will be no M trains running. A free shuttle bus will provide alternate service.

• There will be no D trains running between Bay Parkway and Stillwell Ave., nor will there be any D trains between 62nd St. and Stillwell Ave. A free shuttle bus will provide alternate service.

• Norwood-bound D trains will run express from 36 St. Brooklyn to Grand St.

• Euclid Ave.-bound C trains will run via the F from West 4th St. to Jay St-MetroTech.

• Ozone Park/Far Rockaway-bound A trains will run via the F from West 4th St. to Jay St-MetroTech