Del Norte County

Big Flat Road Bridge   [Map]
Deck truss bridge over Hurdygurdy Creek on Big Flat Road
Open to traffic
Built 1948
Douglas Memorial Bridge   [Map · Street View]
Lost Open-spandrel arch bridge over Klamath River on old US 101
Destroyed by flood
Built 1926, Destroyed by flooding 1964
George E. Tryon Bridge   [Map · Street View]
Lost steel arch bridge over South Fork Smith River on South Fork Road
Replaced by a new bridge
Built 1948, replaced 2017
Hardscrabble Creek Bridge   [Map · Street View]
Concrete box girder bridge over Hardscrabble Creek on US 199 (Redwood Highway)
Open to traffic
Modern Bridge with attempt to recreate stone work with redwood like guard rails
Hiouchi Bridge   [Map · Street View]
Lost cantilevered through truss bridge over Smith River on US 199
Replaced by new bridge
Built 1929; damaged by an oversized truck on March 31, 1989; demolished August 1989
Horse Creek Bridge   [Map]
Lost Warren through truss bridge over Klamath River on Bar Road
Replaced by a new bridge
Klamath River Bridge   [Map]
Beam bridge over Klamath River on US HIGHWAY 101
Open to traffic
Built 1965
Klamath Tour Thru Tree   [Map · Street View]
Tunnel on Private Drive
Open to traffic
Middle Fork Smith River Bridge   [Map · Street View]
Concrete arch bridge over Middle Fork Smith River on US 199
Open to traffic
Built 1925; rehabilitated 1972
Mill Creek Bridge   [Map]
Lost Through truss bridge over Mill Creek on Howland Hill Road
Replaced by a new bridge
Myrtle Creek Bridge   [Map · Street View]
Concrete arch bridge over Myrtle Creek on US 199
Open to traffic
Built 1984
Patrick Creek Bridge   [Map]
Lost Steel stringer bridge over Patrick Creek on US 199 Redwood Hwy
Replaced by a new bridge
Randolph Collier Tunnel   [Map · Street View]
Tunnel under Oregon Mountain on US 199
Open to traffic
Built 1963
Rowdy Creek Bridge   [Map · Street View]
Lost Concrete deck girder bridge over Rowdy Creek on Fred D. Haight Drive
Replaced by new bridge
Built 1913, Partial Collapse 1932, Replaced 1989
Salt Creek Road Bridge   [Map]
Pony truss bridge over Salt Creek on Salt Creek Road in Klamath
Open to traffic
Built 1975
Sheep Pen Creek Bridge   [Map]
Timber stringer bridge over Sheep Pen Creek on Douglas Park Road
Open to traffic
Built 1975
Smith River Bridge   [Map]
Lost Open-spandrel arch bridge over Smith River on US 199 Redwood Hwy
Replaced by a new bridge
Smith River Bridge (1940)   [Map · Street View]
Deck plate girder bridge over Smith River on US 101
Open to traffic
Built 1940
Smith River Bridge (Pre 1940)   [Map]
Lost Through truss bridge over Smith River on US 101
Replaced by a new bridge
South Fork Road Bridge   [Map]
Deck truss bridge over Rock Creek on South Fork Road
Open to traffic
Built 1952