D8 was created as a brand new Metrobus Route on June 4, 1977 to operate between Washington Hospital Center & Sibley Hospital alongside the D6 Metrobus Route, via the Washington DC VA Medical Center, Washington Medstar Hospital Center, Children's Hospital National Medical Center, Trinity University, Glenwood Cemetery, the Edgewood Terrace Apartments, the Rhode Island Avenue Shopping Center, the Rhode Island Avenue Metro Station, the Brentwood Post Office Plant, the Union Station, as well as the Judiciary Square, Metro Center, & Dupont Circle Metro Stations.