A major Red Line shutdown and many delays on the Blue, Orange and Silver lines are the most significant Metro track work scheduled this weekend.

WASHINGTON — A major Red Line shutdown and many delays on the Blue, Orange and Silver lines are the most significant Metro track work scheduled this weekend.

Red Line

On the Red Line, Metro is repairing switches between Judiciary Square and Rhode Island Avenue ahead of the larger six-week shutdown in that area that begins later this month.

This weekend, the Union Station and NoMa-Gallaudet Metro stops will be closed Saturday and Sunday. Shuttle buses will be available between Judiciary Square (5th and F streets NW), Union Station, NoMa-Gallaudet and Rhode Island Avenue.

The last trains from Glenmont, Silver Spring, Brookland and stations in between will depart for Rhode Island Avenue 33 minutes earlier than usual each night. The last trains toward Glenmont will leave at the regular time.

On Friday night, single-tracking is planned after 10 p.m. between Judiciary Square and NoMa-Gallaudet for separate work.

Blue, Orange, Silver lines

Blue, Orange and Silver line trains are only scheduled about twice an hour this weekend.

Silver Line trains are cut back to only run between Wiehle-Reston East and Ballston.

While all Blue and Orange Line stations are open, trains are only scheduled every 26 minutes on each line, with single-tracking between Foggy Bottom and Smithsonian.

Yellow, Green lines

Green and Yellow line trains are scheduled every 15 minutes each this weekend.

Yellow Line trains are also cut back to only run between Huntington and Mt. Vernon Square again this weekend rather than all the way to Fort Totten.

Green Line trains are scheduled to single-track between Fort Totten and Prince George’s Plaza.

Next weekend, Metro plans no major track work, as Major League Baseball All-Star Game festivities ramp up.