Historic Bridges of the U.S.

Blacklog Creek Bridge (Huntingdon County, Pennsylvania)
Built 1927
Concrete arch bridge over Blacklog Creek on US 522
Open to traffic

Middle Creek Bridge (Snyder County, Pennsylvania)
Built 1949; rehabilitated 1987
Pony truss bridge over Middle Creek on US 522 in Kreamer
Open to traffic

Potomac River Bridge (Washington County, Maryland)
Built 1937
Deck truss bridge over Potomac River on US 522 in Bartonsville
Open to traffic