Portland, Oregon

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Alexandra Avenue Bridge (Multnomah County, Oregon)
Built 1922
Concrete arch bridge over a canyon on NW Alexandra Avenue in Portland
Open to traffic

B.N.S.F. - Columbia River Bridge (Clark County, Washington)
Built 1908
Swing span through truss bridge over the Columbia River
Open to traffic

B.N.S.F. - Columbia Slough Bridge (Multnomah County, Oregon)
Built 1908
Pratt through truss bridge over Columbia Slough on BNSF Railway in Portland
Open to traffic

B.N.S.F. - Oregon Slough Bridge (Multnomah County, Oregon)
Built 1908
Swing span through truss bridge over Columbia River - Oregon Slough on BNSF Railway in Portland
Open to traffic

B.N.S.F. - Willamette River Bridge (Multnomah County, Oregon)
1908 Built with swing span, 1989 Vertical lift replaces swing span
Vertical lift bridge over Willamette River on BNSF Railway Line in Portland
Open to traffic

Balch Gulch Bridge (Multnomah County, Oregon)
Built 1905
Pin-connected Pratt deck truss bridge over Balch Gulch on NW Thurman Street in Portland
Open to traffic

Broadway Bridge (Multnomah County, Oregon)
Built 1912; rehabilitated 1927
Rall-Bascule lift bridge over Willamette River on Broadway Street in Portland
Open to traffic

Burnside Bridge (Multnomah County, Oregon)
Built 1926
Strauss bascule lift bridge over Willamette River on Burnside Bridge in Portland
Open to traffic

Burnside Tunnel (Multnomah County, Oregon)
Built 1940
Tunnel on W. Burnside Street in Portland
Open to traffic

Columbia Slough Bridge (Multnomah County, Oregon)
Built 1916, Widened 1951
Deck plate girder bridge over Columbia Slough on OR 99E (MLK Jr. Blvd)
Open to traffic

Cornell Tunnel No. 1 (Multnomah County, Oregon)
Built 1940
Tunnel on NW Cornell Road in Portland
Open to traffic

Cornell Tunnel No. 2 (Multnomah County, Oregon)
Built 1941
Tunnel on NW Cornell Road in Portland
Open to traffic

Fessenden Street Bridge (Multnomah County, Oregon)
Built 1909
Warren deck truss bridge over BNSF Railway on Fessenden Street in Portland
Open to traffic

Fremont Bridge (Multnomah County, Oregon)
Built 1973
Steel through arch bridge over Willamette River on I-405 in Portland
Open to traffic

Hawthorne Bridge (Multnomah County, Oregon)
Built 1910; Rehabilitated 1944, Rehabilitated & Painted in 1999
Vertical lift bridge over Willamette River on Hawthorne Blvd. in Portland
Open to traffic

I-5 - Interstate Bridge (Northbound) (Multnomah County, Oregon)
Built 1917, Main span modification 1958
Vertical lift bridge over the Columbia River on northbound I-5 between Vancouver and Portland in Portland
Open to traffic

I-5 - Interstate Bridge (Southbound) (Multnomah County, Oregon)
Built 1958
Parker through truss bridge over Columbia River on Southbound I-5
Open to traffic

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

Martin Luther King Jr. Blvd Viaduct (Multnomah County, Oregon)
Built 1937, Replaced 2008-2009
Stringer bridge over UPRR & Division Street on Oregon 99E in Portland
Replaced by a new bridge

Morrison Bridge (Multnomah County, Oregon)
Built 1958
Bascule bridge over Willamette River on Morrison Street in Portland
Open to traffic

Newbury Street Viaduct (Multnomah County, Oregon)
Built 1934
Wooden bridge over SW Newbury Street on OR 99W in Portland
Open to traffic

North Lombard Street Bridge (Multnomah County, Oregon)
Built 1909
Warren deck truss bridge over the BNSF Railroad on N. Lombard St. in Portland
Open to traffic

Robertson Tunnel (Multnomah County, Oregon)
Built 1998
Tunnel under the West Hills (Tualatin Mountains) on MAX Light Rail Tracks in Portland
Open to traffic

Rocky Butte Tunnel (Multnomah County, Oregon)
Built 1939
Tunnel under Rocky Butte on Rocky Butte Road in Portland
Open to traffic

Ross Island Bridge (Multnomah County, Oregon)
Built 1926; rehabilitated 2000-01
Cantilevered steel arch bridge over Willamette River on US 26 in Portland
Open to traffic

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

Sellwood Bridge (Multnomah County, Oregon)
Built 1925
Baltimore deck truss bridge over Willamette River on Tacoma Street in Portland
Open to traffic

Spring Street Bridge (Multnomah County, Oregon)
Built 1938
Wooden bridge over SW Spring Street in Portland
Open to pedestrians only

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

Steel Bridge (Multnomah County, Oregon)
Built 1912
Vertical-lift through truss bridge over Willamette River on OR 99W in Portland
Open to highway and light rail traffic on upper deck; bicycle/pedestrian and rail traffic on lower deck

Vermont Street Viaduct (Multnomah County, Oregon)
Built 1934
Wooden bridge over SW Vermont Street on OR 99W in Portland
Open to traffic

Vista Avenue Viaduct (Multnomah County, Oregon)
Built in 1925 by Parker & Banfield
Concrete arch bridge over SW Jefferson on SW Vista Avenue in Portland
Open to traffic

Vista Ridge Tunnel (Multnomah County, Oregon)
Built 1969
Pair of tunnels under Vista Ridge on US 26 in Portland
Open to traffic

Willamette Blvd. Bridge (Multnomah County, Oregon)
Built 1909
Warren deck truss bridge over BNSF Railway on Willamette Blvd. in Portland
Open to traffic