Washington & Old Dominion Railroad

Reporting mark: W&OD
Aqueduct Bridge (1887) (Washington, District of Columbia)
Built 1887, superstructured added in 1904 for Electric Trolley
Lost Pratt deck truss bridge over Potomac River on Road/Electric Railroad

Clarke's Gap Bridge (Loudoun County, Virginia)
Built 1892
Stone arch bridge over Washington and Old Dominion Trail on Dry Mill Road
Open to traffic

Washington & Old Dominion Trail Culvert (Loudoun County, Virginia)
Culvert bridge over Unnamed Tributary of South Fork Catoctin Creek on Washington & Old Dominion Trail
Open to pedestrians only