WASHINGTON (AP) - Metro says track work on the orange, blue and red lines will affect train riders over the weekend.

Continue reading

Two stations, Rosslyn and Arlington Cemetery, will be closed. Metro says the work begins Friday at 10 p.m. and continues through closing on Sunday.

On the blue line, buses will replace trains between Foggy Bottom and Pentagon. And on the orange line, buses will replace trains between Foggy Bottom and Court House.

Metro says customers using the shuttle buses should allow 20 to 30 minutes of additional travel time.

On the red line, trains will single track in two places, between Twinbrook and Grosvenor and between Forest Glen and Takoma.

Customers traveling through the work zones should allow for 15 minutes of additional travel time.