The Cumberland Narrows serves as a western gateway from Cumberland to the Appalachian Plateau and the Ohio River Valley beyond. The Old National Road, now Alternate U.S. 40, passes through the Narrows, along with the former Baltimore and Ohio Railroad's main line between Baltimore/Washington and Pittsburgh, now part of the CSX system, and a former line of the Western Maryland Railroad, now used by the steam- and diesel-powered excursion trains of the Western Maryland Scenic Railroad and the Great Allegheny Passage bike trail.