 The 5.3 mile (8.5 km) line ran from Walbrook Junction, west of Fulton, to Port Covington, and was designed as the WM's Tide Subdivision.In 1968 the Chesapeake and Ohio Railway (C&O) and the Baltimore and Ohio Railroad (B&O) received government approval to jointly control the Western Maryland Railway.In 1973, as part of the Chessie System, Western Maryland ownership went to C&O and it was operated by the B&O.