Only the Yellow Line will operate on its normal route and without scheduled delays this weekend. (Jabin Botsford for The Washington Post)

A long holiday weekend means a long schedule of disruptions, which will affect four of the five lines.

Orange Line: From 10 p.m. Friday through the rail system’s midnight closing Monday, free shuttle buses will replace trains between Stadium-Armory and Cheverly. Splitting the rail line in two segments will clear the way for replacement of track switches outside Stadium-Armory, as well as other work.

The Minnesota Avenue and Deanwood stations will be closed. Trains will operate between Vienna and Stadium-Armory and between New Carrollton and Cheverly every 15 minutes through the holiday weekend. The shuttles will make all station stops between Stadium-Armory and Cheverly. Taking a shuttle all the way probably will add about half an hour to the normal travel time, Metro estimates.

Blue Line: From 10 p.m. Friday through the midnight closing Monday, buses will replace trains between Stadium-Armory and Largo Town Center. This is also for that switch replacement project, as well as other work. The Benning Road, Capitol Heights, Addison Road, Morgan Boulevard and Largo Town Center stations will be closed.

A local shuttle will stop at all the stations between Stadium-Armory and Largo. Taking that entire route would add almost an hour to normal travel time, so if you need to go the whole way, look for the limited-stop shuttle, which goes to Stadium-Armory, Addison Road and Largo Town Center. Taking that trip will add about 35 minutes to regular travel time.

Red Line: From 10 p.m. Friday through the Monday closing, trains will share a track between Rhode Island Avenue and Takoma. Crews will be working on the platforms. Through the weekend, trains will operate every 20 minutes between the ends of the line at Shady Grove and Glenmont. Between 9 a.m. and 9 p.m. on Saturday and Sunday, extra trains will operate between Shady Grove and NoMa-Gallaudet. In that zone, trains should reach platforms about every 10 minutes. That level of extra service also will be in effect between Shady Grove and NoMa-Gallaudet from 6 a.m. to 9 p.m. Monday. If you’re planning to ride through the work zone, figure on an extra 15 minutes of travel time.

Green Line: On Saturday only, shuttle buses will replace trains between Greenbelt and College Park. That’s the zone where Metro is building a test track for the new 7000-series rail cars. Between College Park and Branch Avenue, trains will operate at their regular weekend pace. Between Greenbelt and College Park, add about 15 minutes to normal travel time.

See the schedule for major track work through June.