The D.C.–Dulles Line, designated Route 5A, was a bus route operated by the Washington Metropolitan Area Transit Authority (WMATA) between Washington Dulles International Airport and L'Enfant Plaza station of the Blue, Yellow, Orange, Green and Silver lines of the Washington Metro. The line operates every 30–40 minutes on weekdays and 60 minutes on weekends along the Dulles Toll Road, Interstate 66, Richmond Highway and Interstate 395 between these two locations with no intermediate stops, with the exception of the Herndon–Monroe Park & Ride and Rosslyn station. The trip is approximately 50 minutes long.