 In 1911, McLean and Elkins incorporated the Washington & Old Dominion Railway (W&OD).In 1912, the Georgetown-Great Falls line became the Great Falls Division of the W&OD, sharing trackage with the W&OD's Bluemont Division between Rosslyn and Thrifton Junction.In 1935, Fairfax and Arlington counties obtained the right-of-way west of Thrifton Junction in settlement of delinquent taxes.