Weekend track work will affect Metro's Orange and Red lines and close five stations.
Starting Friday at 10 p.m., buses will replace Orange Line trains between New Carrollton and Stadium-Armory. The New Carrollton, Landover, Cheverly, Deanwood and Minnesota Avenue stations will be closed.
Orange Line trains between Vienna and Stadium-Armory will operate at regular weekend intervals.
On the Red Line, trains between Shady Grove and Glenmont will run every 16 minutes; trains between Grosvenor and Silver Spring will run every 8 minutes.
The Blue, Yellow and Green lines will not be affected by this weekend's track work, which ends at Sunday's closing.