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King County

Washington
12th Avenue South Bridge   [Map · Street View]
Steel arch bridge over WA 90 (Dearborn Street) on 12th Avenue S in Seattle
Open to traffic
Built 1917
14th Avenue South Bridge   [Map · Street View]
Bascule bridge over Duwamish River on 14th Avenue South in Seattle
Demolished. Main span removed September 1, 2010.
Built 1931
41st Street Pedestrian Viaduct   [Map · Street View]
Girder bridge over Aurora Ave N on Pedestrians
Open to pedestrians
Built 1935
Admiral Way Bridge   [Map · Street View]
Concrete encased Warren deck truss bridge over Ravine, Fairmount Avenue on SW Admiral Way
Open to traffic
Built 1927
Airport Way Bridge   [Map · Street View]
Deck plate girder bridge over Argo Railroad Yard on Airport Way S
Open to traffic
Built 1928; rehabilitated 1981
Alaskan Way Viaduct   [Map · Street View]
Stringer bridge over City Streets & Railroad on WA 99
Open to traffic
Built 1952; rehabilitated 1957
Aurora Bridge   [Map · Street View]
Deck truss bridge over Lake Union on WA 99 in Seattle
Open to traffic
Built 1931
B.N.S.F. - Cascade Tunnel   [Map]
Tunnel under Cascade Mountains on BNSF Railway (former Great Northern Railway)
Open to traffic
Longest rail tunnnel in the US, finished in 1929 to bypass old tunnel, switchbacks, and 1.7% grade
B.N.S.F. - Duwamish River Bridge   [Map]
Single leaf bascule bridge over Duwamish River on BNSF Railroad
Closed to all traffic
B.N.S.F. - Foss River Bridge   [Map]
Deck plate girder bridge over Foss River, USFS Rd 68 (Foss River Rd) on BNSF Railroad
Open to traffic
Built 1909
B.N.S.F. - Miller River Bridge   [Map]
Warren through truss bridge over Miller River on BNSF Railway
Open to traffic
Built 1916
B.N.S.F. - South Fork Skykomish River Bridge   [Map]
Skewed Warren through truss bridge over South Fork Skykomish River on BNSF Railway
Open to traffic
Built 1916
B.N.S.F. - Stampede Tunnel   [Map]
Tunnel under the Cascade Mountains just south of Snoqualmie Pass on BNSF Railway (former Northern Pacific Railway)
Tunnel opened in May of 1888, forced-air ventilation added later
Ballard Bridge   [Map · Street View]
Bascule bridge over Lake Washington Ship Canal on 15th Avenue W in Seattle
Open to traffic
Built 1917
Battery Street Tunnel   [Map · Street View]
Tunnel under city streets on WA 99 in Seattle
Open to traffic
Built 1954
BNSF Black River Bridge   [Map]
Pony/through plate girder bridge over Black River on Railroad
Open to traffic
Bomb Shelter Bridge   [Map]
Culvert bridge over Bomb Shelter on I-5 Sb
Open to traffic
Built 1961
Bridge Camp Bridge   [Map]
Pratt pony truss bridge over White River on Pedestrian Walkway
Open to traffic
Built 1902
Cedar River Bridge   [Map · Street View]
Deck girder bridge over Cedar River on WA 900
Open to traffic
Built 1940
Cedar River Trail Bridge   [Map · Street View]
Through truss bridge over Cedar River on Trail
Open to pedestrians only
Cedar River Trail Bridge #2   [Map · Street View]
Pony/through plate girder bridge over Cedar River on Trail
Open to pedestrians only
Cedar River Trail Bridge #3   [Map · Street View]
Through truss bridge over Cedar River on Trail
Open to pedestrians only
Cedar River Trail Bridge #4   [Map · Street View]
Through truss bridge over Cedar River on Trail
Open to pedestrians only
Cedar River Trail Bridge #5   [Map · Street View]
Warren deck truss bridge over Cedar River on Trail
Open to pedestrians only
Cedar River Trail Bridge #6   [Map · Street View]
Warren through truss bridge over Cedar River on Trail
Open to pedestrians only
Cedar River Trail Bridge #7   [Map · Street View]
Through truss bridge over Cedar River on Trail
Open to pedestrians only
Centennial Trail Kimball Creek Bridge   [Map · Street View]
Bridge over Kimball Creek on Trail
Open to pedestrians only
Cowen Park Ravine Bridge   [Map · Street View]
Concrete arch bridge over Cowen Park Ravine on 15th Avenue NE in Seattle
Open to traffic
Built 1936
Cumberland-Kanaske Road Bridge   [Map]
Concrete arch bridge over Green River on Cumberland-Kanaske Road
Open to traffic
Built 1918; rehabilitated 1955
Dravus Street Bridge   [Map · Street View]
Steel stringer bridge with lattice railing over Railroad Yards on W Dravus Street
Open to traffic
Built 1935
Duwamish River Bridge   [Map · Street View]
Bascule bridge over Duwamish River on WA 99 in Seattle
Open to traffic
Built 1956
Duwamish River Bridge   [Map · Street View]
Through truss bridge over Duwamish River on 42nd Avenue S in Tukwila
Open to traffic
Built 1949
Duwamish River West Bridge   [Map · Street View]
Bascule bridge over Duwamish River West on Southbound WA 99 in Seattle
Open to traffic
Built 1996
Eastlake Avenue NE Bridge   [Map · Street View]
Deck truss bridge over NE Pacific Street on Eastlake Avenue NE in Seattle
Open to traffic
Built 1930
Eastlake Avenue NE Bridge   [Map]
Deck truss bridge over Portage Bay on Eastlake Avenue Ne in Seattle
Open to traffic
Built 1930
Edgewick Road Bridge   [Map]
Lost truss bridge over South Fork Snoqualmie River on Edgewick Road
Lost
Built 1920, Replaced 2004
Evergreen Point Floating Bridge   [Map · Street View]
Pontoon bridge over Lake Washington on SR 520
Open to traffic
Built 1963
Foss River Road Bridge   [Map]
Pony truss bridge over Foss River on Foss River Road
Open to traffic
Built 1951
Franklin Road Bridge   [Map]
Deck truss bridge over Green River on Franklin Road
Open to traffic
Built 1914; rehabilitated 1991
Fremont Bridge   [Map · Street View]
Bascule bridge over Lake Washington Ship Canal on Fremont Avenue North in Seattle
Open to traffic
Built 1917
Great Northern Railway Old Cascade Tunnel   [Map]
Abandoned tunnel under the Cascade Mountains on abandoned Great Northern Railway grade
Abandoned
The Original Cascade Tunnel was finished in 1900 and was built to replace a series of 8 switchbacks used to get over the mountains. Deadliest avalanche in US history occurred March 1, 1910 at Wellington (western portal). 96 people killed.
Green River Bridge   [Map · Street View]
Through truss bridge over Green River on WA 18 in Lake Morton-Berrydale
Open to traffic
Built 1959
Green River Bridge   [Map · Street View]
Through truss bridge over Green River on S. 3rd Avenue in Kent
Open to traffic
Built 1914; rehabilitated 1970
Green River Bridge   [Map · Street View]
Cable-stayed bridge over Green River on 228 Place SE
Open to traffic
Built 1991
Green River Bridge   [Map]
Deck truss bridge over Green River on WA 169
Open to traffic
Built 1932
Homer M. Hadley Memorial Bridge   [Map]
Pontoon bridge over Lake Washington on W.B. & Rev I-90
Open to traffic
Built 1989
I-5 - Lake Washington Ship Canal Bridge   [Map · Street View]
Deck truss bridge over Lake Washington Ship Canal on I-5 in Seattle
Open to traffic
Built 1962
I-90 - Mercer Island Tunnel   [Map]
Tunnel on I-90 at Mercer Island
Open to traffic
Built 1989
I-90 - Mt. Baker Ridge Tunnel   [Map]
Pair of tunnels under Mt. Baker Ridge on I-90 in Seattle
Open to traffic
Built 1940 and twinned in 1989
Index Creek Road Bridge   [Map]
Suspension bridge over South Fork Skykomish River on NE Index Creek Road in Baring
Open to traffic
Built 1930; rehabilitated 1952
Interlaken Blvd. Bridge   [Map]
Concrete arch bridge over 26th Avenue on E. Interlaken Blvd. in Seattle
Open to traffic
Built 1912
Issaquah Creek Bridge   [Map · Street View]
Stringer bridge over Issaquah Creek on NW Gilman Blvd.
Open to traffic
Built 1940
Jones Road Bridge   [Map]
Truss bridge over Cedar River on Jones Road
Replaced by a pre-cast concrete girder bridge in 2003
Built 1912, Replaced 2003
Kent-Des Moines Road Bridge   [Map · Street View]
Warren through truss bridge over Green River on Kent-Des Moines Road in Kent
Open to traffic
Built 1958
Lacey V. Murrow Memorial Bridge   [Map · Street View]
Steel through arch bridge over Lake Washington on EB I-90
Open to traffic
Built 1940; rehabilitated 1992
Lake Washington Blvd. Bridge   [Map]
Concrete arch bridge over Lake Washington Blvd. E on pedestrian trail in Seattle
Open to traffic
Built 1910
MacDonald Park Bridge   [Map]
Wire suspension bridge over Snoqualmie River on Trail
Open to pedestrians only
Magnolia Bridge   [Map]
Deck truss bridge over Smith's Cove & Railroad on W Garfield Street
Open to traffic
Built 1929
McGraw Street Bridge   [Map · Street View]
Concrete arch bridge over Ravine on McGraw Street in Seattle
Open to traffic
Built 1935
Meadowbrook Bridge   [Map · Street View]
Parker through truss bridge over Snoqualmie River on 394 Place SE/Meadowbrook Way SE
Open to traffic
Built 1921, rehabilitated 2005
Mill Creek Bridge   [Map · Street View]
Concrete arch bridge over Mill Creek on WA 181 in Kent
Open to traffic
Built 1915
MILW Cedar River Bridge   [Map]
Lost Through truss bridge over Cedar River on Railroad
Replaced by a new bridge
Replaced by a DPG in 2008.
MILW Cedar River Bridge #1   [Map]
Through truss bridge over Cedar River on Private Road
Open to Seattle Public Utilities only
Built 1907-1909
MILW Cedar River Bridge #2   [Map]
Through truss bridge over Cedar River on Private Road
Open to Seattle Public Utilities traffic
Built 1907-1909
MILW Change Creek Bridge   [Map]
Deck plate girder bridge over Change Creek on Trail
Open to pedestrians only
MILW Hall Creek Bridge   [Map]
Deck plate girder bridge over Hall Creek on Trail
Open to pedestrians only
Middle span built in the 80s after a storm damaged the bridge.
MILW Hansen Creek Bridge   [Map]
Deck plate girder bridge over Hansen Creek on Trail
Open to pedestrians only
MILW Mine Creek Bridge   [Map]
Deck plate girder bridge over Mine Creek on Trail
Open to pedestrians only
MILW Snoqualmie River Bridge   [Map]
Lost Through truss bridge over Snoqualmie River on former MILW Railroad
No longer exists
MILW Snoqualmie Tunnel   [Map]
Tunnel on Pedestrian trail under Snoqualmie Pass
Open to pedestrians
Built 1914 by the Chicago, Milwaukee, Saint Paul, and Pacific Railroad. Rehabilitated 2011
Montlake Blvd. Bridge   [Map · Street View]
Concrete rigid frame bridge over Montlake Blvd. on a pedestrian trail in Seattle
Closed to all traffic
Built 1938
Montlake Bridge   [Map · Street View]
Bascule bridge over Montlake Cut on WA 513 in Seattle
Open to traffic
Built 1924; rehabilitated 1999
Mount Si Road Bridge   [Map]
Through truss bridge over Middle Fork Snoqualmie River on Mount Si Road in Tanner
Replaced by a NEW THROUGH TRUSS bridge in 2008
Built 1904; rehabilitated 1955, Replaced 2008-09
Mount Si Road Bridge   [Map · Street View]
Parker through truss bridge over Middle Fork Snoqualmie River on Mount Si Road
Open to traffic
Built 2008
Newaukum Creek Bridge   [Map · Street View]
Concrete arch bridge over Newaukum Creek on SE 400th Street
Open to traffic
Built 1927
Northwest Railway Museum Bridge   [Map · Street View]
Pratt through truss bridge over South Fork Snoqualmie River on Railroad
Open to traffic
Built 1891 crossing the Elkstone River in Montana; Moved here 1923
Novelty Bridge   [Map]
Steel through arch bridge over Snoqualmie River on NE 124th Street in Union Hill-Novelty Hill
Open to traffic
Built 2000
NRM East Fork Kimball Creek Bridge   [Map]
Deck plate girder bridge over East Fork Kimball Creek on Railroad
Open to traffic
Old Cascade Highway Bridge   [Map]
Pratt through truss bridge over Miller River on Old Cascade Highway
Closed due to flood damage
Built 1922
Patton Bridge   [Map · Street View]
Beam bridge over Green River on SE Green Valley Road
Open to traffic
Built 1950
Queen Anne Drive Bridge   [Map · Street View]
Steel arch bridge over Ravine on N. Queen Anne Drive in Seattle
Open to traffic
Built 1935
Raging River Bridge   [Map · Street View]
Concrete arch bridge over Raging River on SE 68th Street
Open to traffic
Built 1915
Raging River Bridge   [Map · Street View]
Through truss bridge over Raging River on 328 Way SE in Fall City
Open to traffic
Built 1998
Raging River Bridge   [Map · Street View]
Lost Steel stringer bridge over Raging River on Preston-Fall City Road
Replaced by new bridge
Built 1937, replaced 1998
Ravenna Park Ravine Bridge   [Map]
Steel arch bridge over Ravenna Park Ravine on 20th Avenue
Open to pedestrians
Built 1912
Redmond Way Overpass   [Map · Street View]
Pony/through plate girder bridge over Redmond Way/WA 908 on Future rail trail
Open to pedestrians only
Built 1972
Reinig Bridge   [Map]
Warren through truss bridge over Snoqualmie River on pedestrian walkway
Open to pedestrians
Built 1896; Abandoned 1980; Converted to pedestrian use
Renton Public Library   [Map · Street View]
Slab bridge over Cedar River on Library
Open to pedestrians only
Built 1964
Sammamish River Bridge   [Map]
Open spandrel arch bridge over Sammamish River on NE 90th Street in Redmond
Open to traffic
Built 2001
Sammamish River Railroad Bridge   [Map · Street View]
Deck plate girder bridge over Sammamish River on Former BN railroad line; future rail-trail
Open to pedestrians only
Snoqualmie River Bridge   [Map · Street View]
Through truss bridge over Snoqualmie River on WA 202 in Snoqualmie
Open to traffic
Built 1931
Snoqualmie Valley Trail South Fork River Bridge   [Map]
Pony truss bridge over South Fork Snoqualmie River on Trail
Open to pedestrians only
Snoqualmie Valley Trail Tolt River Bridge   [Map]
Deck plate girder bridge over Tolt River on Trail
Open to pedestrians only
South Fork Skykomish River Bridge   [Map · Street View]
Through truss bridge over South Fork Skykomish River on US 2
Open to traffic
Built 1938
South Fork Skykomish River Bridge   [Map]
Warren through truss bridge over South Fork Skykomish River on 5th Street N in Skykomish
Open to traffic
Built 1939
South Fork Skykomish River Bridge   [Map]
Steel stringer bridge over Skykomish River on Old Cascade Highway
Open to traffic
Built 1957
South Fork Snoqualmie River Bridge   [Map]
Concrete arch bridge over South Fork Snoqualmie River
Open to traffic
Built 1927
South Fork Snoqualmie River Bridge   [Map]
Lost truss bridge over South Fork Snoqualmie River
Lost
Built 1920
South Fork Snoqualmie River Bridge   [Map]
Concrete tee beam bridge over South Fork Snoqualmie River on North Bend Way
Open to traffic
Built 1941
Spokane Street Bridge   [Map · Street View]
Swing bridge over W. Waterway of Duwamish River on SW Spokane Street in Seattle
Open to traffic
Built 1991
Stossel Bridge   [Map · Street View]
Through truss bridge over Snoqualmie River on NE Carnation Farm Road
Open to traffic
Built 1951
Taylor Creek Bridge
Pony truss bridge over Taylor Creek on Watershed Road #9
Open to traffic
Built 1910
Tokul Creek Trestle   [Map]
Deck plate girder bridge over Tokul Creek on Trail
Open to pedestrians only
Tolt Hill Road Bridge   [Map]
Through truss bridge over Snoqualmie River on NE Tolt Hill Road
Replaced by a NEW THROUGH TRUSS bridge in 2008
Built 1922; rehabilitated 1968, Replaced 2008
Tolt River Bridge   [Map · Street View]
Through truss bridge over Tolt River on WA 203 in Carnation
Open to traffic
Built 1977
Twin Tunnels   [Map]
Tunnel on Iron Goat Trail
Open to pedestrians only
Built 1893; Snowshed added 1914/1916; Abandoned 1929
University Bridge   [Map · Street View]
Bascule bridge over Portage Bay on Eastlake Avenue NE in Seattle
Open to traffic
Built 1915
UP Black River Bridge   [Map]
Pony/through plate girder bridge over Black River on Railroad
Open to traffic
UP Green River Bridge   [Map · Street View]
Warren through truss bridge over Green River on Railroad
Open to traffic
UP Green River Bridge (Spur)   [Map · Street View]
Warren through truss bridge over Green River on Railroad
Open to traffic
US 2 Tunnel   [Map · Street View]
Tunnel on US 2
Open to traffic
Built 1937
WA 99 Bridge   [Map · Street View]
Concrete arch bridge over WA 99 on a pedestrian trail in Seattle
Open to traffic
Built 1933
West Cascade Snowshed   [Map]
Snowshed on former Great Northern Railway
Open to pedestrians
Built in 1911 after an avalanche in the same spot killed 90 people just west of the old Cascade Tunnel in 1910. Due to the high cost of building it was the only all concrete snowshed built by the Great Northern
Weyerhaeuser Road Bridge   [Map · Street View]
Timber stringer bridge over State Route 410 on Weyerhaeuser Road
Closed to all traffic
Built 1960
Weyerhaeuser Road Bridge   [Map · Street View]
Stringer bridge over Weyerhaeuser Mainline Road on SE Mud Mountain Road
Open to traffic
Built 1960; rehabilitated 1995
Weyerhaeuser Road Bridge   [Map · Street View]
Abandoned Concrete tee beam bridge over Scatter Creek on Former Weyerhaeuser Mainline Road
Demolished
White River Bridge   [Map · Street View]
Through truss bridge over White River on WA 410 in Buckley
Open to traffic
Built 1949
Wilburton Trestle   [Map · Street View]
Deck plate girder and timber stringer bridge over Richards Creek & 8th/9th Streets on railroad
Inactive since 2008
Built 1904
Woodbine Way Bridge   [Map]
Concrete arch bridge over Ravine on Woodbine Way in Seattle
Open to traffic
Built 1928