12th Avenue South Bridge Steel arch bridge over WA 90 (Dearborn Street) on 12th Avenue S in Seattle Open to traffic Built 1917
14th Avenue South Bridge Bascule bridge over Duwamish River on 14th Avenue South in Seattle Open to traffic Built 1931
Battery Street Tunnel Tunnel under city streets on WA 99 in Seattle Open to traffic Built 1954
Cascade Stevens Highway Bridge Through truss bridge over Miller River on Cascade Stevens Highway Open to traffic Built 1922
Cowen Park Ravine Bridge Concrete arch bridge over Cowen Park Ravine on 15th Avenue NE in Seattle Open to traffic Built 1936
Cumberland-Kanaske Road Bridge Concrete arch bridge over Green River on Cumberland-Kanaske Road Open to traffic Built 1918; rehabilitated 1955
Deshutes River Bridge Concrete arch bridge over Deshutes River on W 4th Avenue in Olympia Open to traffic Built 1920
Duwamish River Bridge Bascule bridge over Duwamish River on WA 99 in Seattle Open to traffic Built 1956
Duwamish River Bridge Through truss bridge over Duwamish River on 42nd Avenue S in Tukwila Open to traffic Built 1949
Duwamish River West Bridge Bascule bridge over Duwamish River West on Southbound WA 99 in Seattle Open to traffic Built 1996
Eastlake Avenue Bridge Bascule bridge over Portage Bay on Eastlake Avenue NE in Seattle Open to traffic Built 1915
Eastlake Avenue NE Bridge Deck truss bridge over NE Pacific Street on Eastlake Avenue NE in Seattle Open to traffic Built 1930
Eastlake Avenue NE Bridge Deck truss bridge over Portage Bay on Eastlake Avenue Ne in Seattle Open to traffic Built 1930
Edgewick Road Bridge Truss bridge over South Fork Snoqualmie River on Edgewick Road Open to traffic Built 1920
Fauntleroy Bridge Vertical lift bridge over Puget Sound on WA 160 in Seattle Open to traffic Built 1957; rehabilitated 2002
Foss River Road Bridge Pony truss bridge over Foss River on Foss River Road Open to traffic Built 1951
Franklin Road Bridge Deck truss bridge over Green River on Franklin Road Open to traffic Built 1914; rehabilitated 1991
Fremont Bridge Bascule bridge over Lake Washington Ship Canal on Fremont Avenue North in Seattle Open to traffic Built 1917
Green River Bridge Through truss bridge over Green River on WA 18 in Lake Morton-Berrydale Open to traffic Built 1959
Green River Bridge Through truss bridge over Green River on S. 3rd Avenue in Kent Open to traffic Built 1914; rehabilitated 1970
Green River Bridge Cable-stayed bridge over Green River on 228 Place SE Open to traffic Built 1991
Green River Bridge Deck truss bridge over Green River on WA 169 Open to traffic Built 1932
Index Creek Road Bridge Suspension bridge over South Fork Skykomish River on NE Index Creek Road in Baring Open to traffic Built 1930; rehabilitated 1952
Interlaken Blvd. Bridge Concrete arch bridge over 26th Avenue on E. Interlaken Blvd. in Seattle Open to traffic Built 1912
Jones Road Bridge Truss bridge over Cedar River on Jones Road Open to traffic Built 1912
Kent-Des Moines Road Bridge Through truss bridge over Green River on Kent-Des Moines Road in Kent Open to traffic Built 1958
Lake Union Bridge Deck truss bridge over Lake Union on WA 99 in Seattle Open to traffic Built 1931
Lake Washington Blvd. Bridge Concrete arch bridge over Lake Washington Blvd. E on pedestrian trail in Seattle Open to traffic Built 1910