WA 99

1st Avenue South Bridge (NB) (King County, Washington)
Built 1956
Bascule bridge over Duwamish River on WA 99 in Seattle
Open to traffic

1st Avenue South Bridge (SB) (King County, Washington)
Built 1996
Bascule bridge over Duwamish River West on Southbound WA 99 in Seattle
Open to traffic

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

Battery Street Tunnel (King County, Washington)
Built 1954
Tunnel under city streets on WA 99 in Seattle
Open to traffic