Seattle, Washington

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14th Avenue South Bridge (King County, Washington)
Built 1931
Bascule bridge over Duwamish River on 14th Avenue South in Seattle
Demolished. Main span removed September 1, 2010.

41st Street Pedestrian Viaduct (King County, Washington)
Built 1935
Girder bridge over Aurora Ave N on Pedestrians
Open to pedestrians

Admiral Way Bridge (King County, Washington)
Built 1927
Concrete encased Warren deck truss bridge over Ravine, Fairmount Avenue on SW Admiral Way
Open to traffic

Airport Way Bridge (King County, Washington)
Built 1928; rehabilitated 1981
Deck plate girder bridge over Argo Railroad Yard on Airport Way S
Open to traffic

Alaskan Way Viaduct (King County, Washington)
Built 1952; rehabilitated 1957
Stringer bridge over City Streets & Railroad on WA 99
Open to traffic

Aurora Bridge (King County, Washington)
Built 1931
Deck truss bridge over Lake Union on WA 99 in Seattle
Open to traffic

B.N.S.F. - Duwamish River Bridge (King County, Washington)
Single leaf bascule bridge over Duwamish River on BNSF Railroad
Closed to all traffic

BNSF Salmon Bay Bridge 4 (King County, Washington)
Built 1913
Warren through truss bridge over Salmon Bay on BNSF Railroad
Open to traffic

Dravus Street Bridge (King County, Washington)
Built 1935
Steel stringer bridge with lattice railing over Railroad Yards on W Dravus Street
Open to traffic

Duwamish River West Bridge (King County, Washington)
Built 1996
Bascule bridge over Duwamish River West on Southbound WA 99 in Seattle
Open to traffic

Evergreen Point Floating Bridge (King County, Washington)
Built 1963
Pontoon bridge over Lake Washington on SR 520
Open to traffic

Fremont Bridge (King County, Washington)
Built 1917
Bascule bridge over Lake Washington Ship Canal on Fremont Avenue North in Seattle
Open to traffic

Homer M. Hadley Memorial Bridge (King County, Washington)
Built 1989
Pontoon bridge over Lake Washington on W.B. & Rev I-90
Open to traffic

I-5 - 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

Lacey V. Murrow Memorial Bridge (King County, Washington)
Built 1940; rehabilitated 1992
Steel through arch bridge over Lake Washington on EB I-90
Open to traffic

Magnolia Bridge (King County, Washington)
Built 1929
Deck truss bridge over Smith's Cove & Railroad on W Garfield Street
Open to traffic

Montlake Bridge (King County, Washington)
Built 1924; rehabilitated 1999
Bascule bridge over Montlake Cut on WA 513 in Seattle
Open to traffic

NP Lake Washington Canal Railroad Bridge (King County, Washington)
Built 1914
Lost Warren through truss bridge over Lake Washington Canal on Northern Pacific Railroad
No longer exists

Old NP Duwamish River Railroad Bridge (King County, Washington)
Built 1911
Bridge over Duwamish River on Northern Pacific Railroad
Open to traffic

Ravenna Park Ravine Bridge (King County, Washington)
Built 1912
Steel arch bridge over Ravenna Park Ravine on 20th Avenue
Open to pedestrians

Spokane Street Bridge (King County, Washington)
Built 1991
Swing bridge over W. Waterway of Duwamish River on SW Spokane Street in Seattle
Open to traffic

Woodbine Way Bridge (King County, Washington)
Built 1928
Concrete arch bridge over Ravine on Woodbine Way in Seattle
Open to traffic