Seattle, Washington
View Exhibit map12th Avenue South Bridge (King County, Washington)
Built 1911; approaches rebuilt in 1917 and 1924Steel arch bridge over WA 90 (Dearborn Street) on 12th Avenue S in SeattleOpen to traffic
1st Avenue South Bridge (SB) (King County, Washington)
Built 1996Bascule bridge over Duwamish River West on Southbound WA 99 in SeattleOpen to traffic
Admiral Way Bridge (King County, Washington)
Built 1927Concrete encased Warren deck truss bridge over Ravine, Fairmount Avenue on SW Admiral WayOpen to traffic
Airport Way Bridge (King County, Washington)
Built 1928; rehabilitated 1981Deck plate girder bridge over Argo Railroad Yard on Airport Way SOpen to traffic
Alaskan Way Footbridge (King County, Washington)
Built 1908Pony/through plate girder bridge over Western Ave on PedestrianOpen to pedestrians only
Alaskan Way Viaduct (King County, Washington)
Built 1953; rehabilitated 1957; replaced 2010-2019Double-deck stringer bridge running parallel to Alaskan Way along Seattle waterfrontDemolished 2019
Amgen Helix Bridge (King County, Washington)
Built 2004Bridge over BNSF (11 sets of tracks) on Pedestrian, bikeOpen to pedestrians and cyclists
Aurora Avenue Bridge (King County, Washington)
Built 1931Deck truss bridge over Lake Union on Aurora Ave./WA 99 in SeattleOpen to traffic
Aurora Footbridge (King County, Washington)
Built 1935Girder bridge over Aurora Ave N on PedestriansOpen to pedestrians
Aurora Overpass (King County, Washington)
Built 1961Concrete rigid frame bridge over Aurora Avenue on Pedestrian PathwayOpen to pedestrians only
Ballard Bridge (King County, Washington)
Built 1917Bascule bridge over Lake Washington Ship Canal on 15th Avenue W in SeattleOpen to traffic
Ballard Swing Bridge (Old) (King County, Washington)
Built in 1910; replaced in 1916Lost Howe through truss bridge over Lake Washington Canal on 14 AvenueReplaced by a new bridge
BNSF - Duwamish River Bridge (King County, Washington)
Built 1928Single leaf bascule bridge over Duwamish River on BNSF Railroad (single track)Open to traffic
BNSF - Salmon Bay Bridge No. 4 (King County, Washington)
Built 1913Warren through truss bascule bridge over Salmon Bay on BNSF Railroad ( 2 tracks)Open to RR traffic; carries 30-40 passenger and freight trains per day.
Burke-Gilman Trail - Pay Streak Bridge (King County, Washington)
Concrete rigid frame bridge over Pay Streak (Alaska-Yukon-Pacific Exposition Name) on Burke-Gilman TrailOpen to pedestrians only
Delridge Overpass (King County, Washington)
Built 1960Concrete rigid frame bridge over Delridge Way on Pedestrian PathwayOpen to pedestrians only
Dravus Street Bridge (King County, Washington)
Built 1935Steel stringer bridge with lattice railing over Railroad Yards on W Dravus StreetOpen to traffic
Elliot Bay Drawbridge (King County, Washington)
Lost Polygonal Warren pony truss with alternating verticals bridge over Elliot Bay on RailroadNo longer exists
Evergreen Point Floating Bridge (King County, Washington)
Built 1963, replaced by new six-lane floating bridge in 2016Pontoon bridge over Lake Washington on SR 520Replaced by a new bridge
Fremont Bridge (King County, Washington)
Built 1917Bascule bridge over Lake Washington Ship Canal on Fremont Avenue North in SeattleOpen to traffic
Grant Street Streetcar Bridge (King County, Washington)
Lost Howe through truss swing bridge over Duwamish River on 14 Street on Grant Street Electric RailwaySuperstructure replaced
Hec-Ed Bridge (King County, Washington)
Built 1938Concrete rigid frame bridge over Montlake Boulevard on University of Washington PathwayOpen to pedestrians
Interlaken Boulevard Overpass (King County, Washington)
Built 1912Concrete arch bridge over 26th Avenue on E. Interlaken Blvd. in SeattleOpen to traffic
Joe Desimone Bridge (King County, Washington)
Built 1924Bridge over Western Avenue Open to pedestrians only
Juneau Street Footbridge (King County, Washington)
Built 1915Lost Deck truss bridge over Great Northern RR on Path at Juneau StreetRemoved but not replaced
Lander Street Footbridge (King County, Washington)
Built 1915Lost Through truss bridge over Rail yard on Path ay Lander StreetRemoved but not replaced
Latona Bridge (King County, Washington)
Built 1890; Rebuilt 1909 to allow pedestrian & vehicular traffic; Replaced 1919Lost Pennsylvania through truss bridge over Union Lake/Lake Washington Canal on Trolley CarsNo longer exists
Latona Railroad Bridge (Temporary) (King County, Washington)
Built 1902; removed 1932Lost Pony/through plate girder bridge over Lake Washington Canal on Seattle Electric RailwayNo longer exists
Magnolia Bridge (King County, Washington)
Built 1929Deck truss bridge over Smith's Cove & Railroad on W Garfield StreetOpen to traffic
Montlake Bridge (King County, Washington)
Built 1925; rehabilitated 1999Bascule bridge over Montlake Cut on WA 513 in SeattleOpen to traffic
NE Pacific Street Bridge (King County, Washington)
Closed-spandrel arch bridge over Rainier Vista on NE Pacific StreetOpen to traffic
North Bridge (King County, Washington)
Built 1924; Struck June 11, 1978; Replaced 1991Lost Parker through truss bridge over Duwamish River on Spokane Street West WaterwayReplaced by a new bridge
NP - Duwamish River Bridge (King County, Washington)
Built 1911; Reconstructed and energy translated from the span to the counterweight in late 1920'sBridge over Duwamish River on Northern Pacific RailroadOpen to traffic Reconstructed in the late 1920's by taking the operating struts from the counterweight bridge tower and placed on the bascule truss the operating machinery was removed from the span,and built into the counterweight bridge tower
NP - Lake Washington Canal Bridge (King County, Washington)
Built 1914 ; removed in 1976Lost Warren through truss bridge over Lake Washington Canal on Northern Pacific RailroadNo longer exists
Oxbow Bridge (King County, Washington)
Built 1911; Draw mechanism replaced 1929; Replaced 1956Lost Warren through truss bridge over Duwamish Waterway on 1st Avenue SouthReplaced by a new bridge
Ravenna Park Ravine Bridge (King County, Washington)
Built 1912Steel arch bridge over Ravenna Park Ravine on 20th AvenueOpen to pedestrians
Riverton Drawbridge (King County, Washington)
Built 1903 of Douglas Fir & Cedar; Closed 1919; Removed 1927Lost Double-intersection Warren through truss swing bridge over Duwamish River on Old Military RoadRemoved but not replaced
Schmitz Park Bridge (King County, Washington)
Built 1935Concrete rigid frame bridge over Schmitz Blvd, Ravine on Sw Admiral WayOpen to traffic
SECo - Lesci Park Bridge (King County, Washington)
Abandoned closed-spandrel arch bridge over Lake Washington Boulevard Abandoned
Second Spokane Street Drawbridge (King County, Washington)
Built 1907; Replaced 1917Pratt through truss bridge over Duwamish River on Spokane Street & StreetcarsReplaced by a new bridge
South Park Bridge (King County, Washington)
Built 2014Through truss bridge over Duwamish River on 14 AvenueOpen to traffic
South Park Bridge (Old) (King County, Washington)
Built 1931Bascule bridge over Duwamish River on 14th Avenue South in SeattleDemolished. Main span removed September 1, 2010.
Spokane Street Bridge (King County, Washington)
Built 1991Swing bridge over W. Waterway of Duwamish River on SW Spokane Street in SeattleOpen to traffic
SR 520 Floating Bridge (King County, Washington)
Opened in 2016Floating bridge over Lake Washington on SR 520Open to traffic
Third Spokane Street Drawbridge (King County, Washington)
Built 1917; Replaced by a new road bridge 1924, streetcar line closed 1928.Lost Pratt through truss bridge over Duwamish River on Spokane Street & StreetcarsReplaced by a new bridge
University Bridge (King County, Washington)
Built 1919, approaches and bridge deck rebuilt between 1932 and 1933Bascule bridge over Portage Bay on Eastlake Avenue NE in SeattleOpen to traffic
West Seattle Bridge (King County, Washington)
Built 1984; Closed due to cracking 2020; Expected to reopen at some point in 2022Concrete deck girder bridge over Duwamish Waterway & Industrial Flats on West Seattle Expressway/Spokane Street BypassClosed due to serious cracking in March 2020. Expected to remain closed until at least 2022.
Woodbine Way Bridge (King County, Washington)
Built 1928Concrete arch bridge over Ravine on Woodbine Way in SeattleOpen to traffic
Yesler Way Bridge (King County, Washington)
Built 1909; rehabilitated 1975Girder bridge over 4th Ave S on Yesler WayOpen to traffic