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The Dalecarlia Tunnel, part of the Capital Crescent Trail

Coordinates: 38°56′37″N 77°06′57″W / 38.943548°N 77.115794°W / 38.943548; -77.115794 The Dalecarlia Tunnel is an abandoned railroad tunnel in Brookmont, Maryland, near Washington, D.C., that carries the Capital Crescent Trail underneath MacArthur Boulevard and the Washington Aqueduct.

It was built in 1910 as part of the Georgetown Branch of the Baltimore and Ohio Railroad[citation needed]. It is a Roman arch tunnel, measuring 18 feet (5.5 m) wide by 340 feet (100 m) long. It features decorative brick facings on both ends and is lined with brick throughout its length.

CSX Transportation, the successor to the B&O Railroad, ceased train operations through the tunnel in 1985 and officially abandoned the rail line in 1986.

See alsoEdit


  • Harwood, Jr., Herbert H. (1979). Impossible Challenge: The Baltimore & Ohio Railroad in Maryland. Baltimore, MD: Barnard, Roberts. ISBN 0-934118-17-5.

External linksEdit