Alexandria, Virginia

Hunting Creek Bridge (Fairfax County, Virginia)
Built 1932; rehabilitated 1975
Concrete arch bridge over Hunting Creek on George Washington Memorial Parkway
Open to traffic

USMRR - Potomac River Bridge (Old) (Prince George's County, Maryland)
Built 1864
Lost Bridge over Potomac River
Replaced by a new bridge

Wilkes Street Tunnel (Alexandria, Virginia)
Used heavily during the Civil War, refurbished by city in 2007-08
Open to pedestrians and bicyclists

Woodrow Wilson Memorial Bridge (1961) (Prince George's County, Maryland)
Built 1961; rehabilitated 1984, Replaced 2008
Lost bascule bridge over Potomac River on the Capital Beltway (I-95/I-495) in Fort Washington
Replaced by the 2008 Woodrow Wilson Memorial Bridge