Gilpin Construction

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Hood River-White Salmon Bridge (Hood River County, Oregon)
Contractor, 1924
Vertical lift bridge over Columbia River in Hood River
Open to traffic

North Yamhill River Bridge (Yamhill County, Oregon)
Contractor, 1921
Warren deck truss bridge over North Yamhill River on Southbound OR 99W
Open to traffic

Sauvie Island Bridge (1948) (Multnomah County, Oregon)
Contractor, 1948
Lost Parker through truss bridge over Multnomah Channel on FAS A668 in Portland
Replaced by a new bridge in June 2008

Sellwood Bridge (1925) (Multnomah County, Oregon)
Contractor, 1925
Baltimore deck truss bridge over Willamette River on Tacoma Street in Portland
Replaced by a new bridge

St. Johns Bridge (Multnomah County, Oregon)
Contractor, 1931
Suspension bridge over Willamette River on US 30 Bypass in Portland
Open to traffic

Yale Bridge (Clark County, Washington)
Contractor, 1932
Suspension bridge over North Fork Lewis River on WA 503
Open to traffic

Yaquina Bay Bridge (Lincoln County, Oregon)
Contractor, 1936
Steel through arch bridge over Yaquina Bay on US 101 in Newport
Open to traffic