(Astrid Riecken for The Washington Post)

Metro’s weekend work will impact four lines and close four stations this weekend, with only the Green Line avoiding any (scheduled) headaches. All of this work will begin at 10 p.m. Friday and last until the system closes on Sunday night.

On the Red Line, the Rhode Island Ave, Brookland and Fort Totten stations will be closed. Buses will replace trains between NoMa-Gallaudet U and Takoma to allow for platform reconstruction, rail renewal and other work.

Metro warns travelers that trips through the work zone could take 40 minutes longer than usual, so be prepared for delays. Green Line trains will still service Fort Totten, so taking that line to Gallery Place could be one way to avoid the shuttle buses.

Red Line trains will run every 10 minutes between 9 a.m. and 9 p.m. and every 15 minutes at all other times, according to Metro.

Another station closure will affect Blue and Yellow Line riders as well as some air travelers: The National Airport station will be closed for track improvements. Shuttle buses will replace trains on the Blue and Yellow lines between Crystal City and Braddock Road. Some buses will only stop at Crystal City and Braddock Road, while others will stop at the airport.

Yellow and Blue line trains will run every 16 minutes from 7 a.m. to 9 p.m. and every 20 minutes from 9 p.m. until the system closes each night. Metro warns that it could take an additional 15 minutes to travel using the shuttle buses, but as always, be prepared for potentially longer delays.

In addition, Orange Line trains will single-track between the East Falls Church and West Falls Church stations for Silver Line testing and between Stadium-Armory and Cheverly for platform reconstruction and track work. Expect the trip to take at least (emphasis on at least) 15 extra minutes. Orange Line trains will run every 24 minutes during the weekend.