Historic Bridges of the U.S.

Columbia River Interstate Bridge (Multnomah County, Oregon)
Northbound bridge built 1917; southbound bridge built 1958
Pair of vertical lift bridges over the Columbia River on I-5 between Vancouver and Portland in Portland
Open to traffic

Cowlitz River Bridge (Lewis County, Washington)
Built 1953
Pair of truss bridges over Cowlitz River on I-5
Open to traffic

Dog Creek Bridge (Shasta County, California)
Built 1956; rehabilitated 1989
Concrete arch bridge over Dog Creek on I-5 in Lakehead-Lakeshore
Open to traffic

East Fork Lewis River Bridge (Clark County, Washington)
Built 1936
Through truss bridge over East Fork Lewis River on I-5
Open to traffic

Galls Creek Bridge (Jackson County, Oregon)
Built 1938
Through truss bridge over Galls Creek on I-5 Frontage Road
Open to traffic

Lake Washington Ship Canal Bridge (King County, Washington)
Built 1962
Deck truss bridge over Lake Washington Ship Canal on I-5 in Seattle
Open to traffic

Lewis River Bridge (Clark County, Washington)
Built 1968
Through truss bridge over Lewis River on I-5
Open to traffic

Lewis River Bridge (Clark County, Washington)
Built 1940
Through truss bridge over Lewis River on I-5
Open to traffic

Marquam Bridge (Multnomah County, Oregon)
Built 1966, Seismic Retrofit 1996
Deck truss bridge over Willamette River on I-5 in Portland
Open to traffic

Nisqually River Bridge (Thurston County, Washington)
Built 1937; rehabilitated 1982
Through truss bridge over Nisqually River on I-5
Open to traffic

Nooksack River Bridge (Whatcom County, Washington)
Built 1955
Through truss bridge over Nooksack River on I-5 in Ferndale
Open to traffic

North Umpqua River I-5 Bridge (Douglas County, Oregon)
Northbound bridge built 1955; southbound built 1964
Pair of deck truss bridges over North Umpqua River on I-5 in Roseburg North
Open to traffic

Pitt River Bridge (Shasta County, California)
Built 1941
Deck truss bridge over Shasta River and railroad tracks on I-5
Open to traffic

Sacramento River Bridge (Siskiyou County, California)
Built 1955; rehabilitated 1983
Concrete arch bridge over Sacramento River on I-5 in Dunsmuir
Open to traffic

Sacramento River Bridge (Shasta County, California)
Built 1941; rehabilitated 1967
Deck truss bridge over Sacramento River on I-5 in Lakehead-Lakeshore
Open to traffic

Skagit River Bridge (Skagit County, Washington)
Built 1955
Through truss bridge over Skagit River on I-5 in Mount Vernon
Open to traffic

Skookumchuck River Bridge (Lewis County, Washington)
Built 1951
Pair of truss bridges over Skookumchuck River on I-5 in Centralia
Open to traffic

South Umpqua River I-5 Bridge (Douglas County, Oregon)
Built 1965; rehabilitated 1983
Deck truss bridge over South Umpqua River on Southbound I-5
Open to traffic

South Umpqua River I-5 Bridge (Douglas County, Oregon)
Northbound bridge built 1955; southbound built 1964
Pair of deck truss bridges over South Umpqua River I-5 in Green
Open to traffic

South Umpqua River I-5 Bridge (Douglas County, Oregon)
Southbound bridge built 1955; northbound built 1976
Pair of deck truss bridges over South Umpqua River on I-5 in Roseburg
Open to traffic

Stillaguamish River Bridge (Snohomish County, Washington)
Built 1933
Through truss bridge over Stillaguamish River on I-5
Open to traffic

Toutle River Bridge (Cowlitz County, Washington)
Built 1969
Steel through arch bridge over Toutle River on I-5
Open to traffic