Historic Bridges of the U.S.

Biggs Bridge (Sherman County, Oregon)
Built 1962
Through truss bridge over Columbia River on US 97
Open to traffic

Canyon High Bridge (Jefferson County, Oregon)
Built 2000
Concrete arch bridge over Crooked River on US 97
Open to traffic

Columbia River Bridge (Klickitat County, Washington)
Built 1962
Through truss bridge over Columbia River on US 97 in Maryhill
Open to traffic

Columbia River Bridge (Douglas County, Washington)
Built 1962
Steel through arch bridge over Columbia River on US 97
Open to traffic

Knapps Hill Tunnel (Chelan County, Washington)
Built 1936
Tunnel under Knapps Hill on Alt US 97
Open to traffic