WASHINGTON (AP) -- Metro says it's closing four stations on the orange line for weekend work, and passengers will have to use shuttle buses to travel between those stations.

Metro will close the Vienna, Dunn Loring, West Falls Church and East Falls Church stations beginning Friday at 10 p.m. through closing Sunday. Metro says it will run both express and local buses between the stations. Customers traveling on the express buses should add 25 minutes to their travel time. Passengers traveling on the local bus can expect to add 50 minutes to their trip.

Metro also says red line trains will track between Friendship Heights and Van Ness and between Takoma and Rhode Island Ave. Green line trains will single track between Greenbelt and College Park, leading to 10-minute delays.