Metro is warning riders of delays due Tuesday morning due to single-tracking on the Red Line; speed restrictions outside the McPherson Square station, and track work on the Orange and Silver lines.
Red Line trains have been single-tracking throughout the morning between Grosvenor and Friendship Heights due to a track problem at Medical Center.
Riders should expect 45-minute delays and crowding, Metro said.
Outbound trains are bypassing the Bethesda station to reduce delays.
In addition, trains originating at Silver Spring are running only as far as Farragut North.
Red Line trains are running every 18 minutes, with additional service between Grosvenor and Friendship Heights.
Metro is recommending Metrobus alternatives: the J1, J2 and J3 lines between Silver Spring and Bethesda, and the 30N, 30S, 31, 33, N2, N3 and N4 lines from Friendship Heights to Foggy Bottom and Dupont Circle.
Earlier Tuesday, trains were also single-tracking between Van Ness and Dupont Circle due to a track problem at Woodley Park.
Orange, Silver and Blue Lines
On the Orange Line, delays are possible in both directions due to scheduled track work between Federal Center and Eastern Market, Metro said late Tuesday morning.
On the Silver Line, trains are running only between Wiehle and East Falls Church due to scheduled track work. Riders should use the Orange or Blue lines to or from other stations.
In addition, speed restrictions are in place around McPherson Square for the inbound track of the Orange, Silver and Blue lines (in the direction of New Carrollton and Largo Town Center).
A similar speed restriction was in effect around the McPherson Square station last week.