95th Street Bridge (Cook County, Illinois)
Built 1958
Bascule bridge over Calumet River on 95th Street (US 12/US 20) in Chicago
Open to traffic

Black River Bridge (Grays Harbor County, Washington)
Built 1932
Pony truss bridge over Black River on US 12
Open to traffic

Chippewa River Bridge (Chippewa County, Wisconsin)
Built 1942
Deck truss bridge over Chippewa River on Clairemont Road (US 12) in Eau Claire
Open to traffic

Coldwater Bridge (Branch County, Michigan)
Built 1920 by the Brookville Bridge Co.
Pony truss bridge over Coldwater River on Old US 12 in Coldwater
Closed to all traffic

Coppei Creek Bridge (Walla Walla County, Washington)
Built 1920
Concrete arch bridge over Coppei Creek on US 12 in Waitsburg
Replaced by a new bridge in 2005

Corn Creek Bridge (Lewis County, Washington)
Built 1967
Steel arch bridge over Corn Creek on US 12
Open to traffic

Cortright Creek Bridge (Lewis County, Washington)
Built 1983
Deck truss bridge over Cortright Creek on US 12
Open to traffic

Cowlitz River Bridge (Lewis County, Washington)
Built 1948
Through truss bridge over Cowlitz River on US 12
Open to traffic

Cowlitz River Bridge (Lewis County, Washington)
Built 1968
Concrete arch bridge over Cowlitz River on US 12
Open to traffic

Dry Creek Bridge (Walla Walla County, Washington)
Built 1920; rehabilitated 1969
Concrete arch bridge over Dry Creek on US 12 in Dixie
Open to traffic

Huron River Bridge (Washtenaw County, Michigan)
Built 1912
Concrete arch bridge over Huron River on Business US 12 and M-17 in Ypsilanti
Open to traffic

Indian Timothy Memorial Bridge (Asotin County, Washington)
Built 1923 by the Colonial Building Co.; bypassed by new bridge in 1974
Bypassed two-span through arch bridge over Alpowa Creek on US 12
Closed to all traffic

Missouri River Bridge (Walworth County, South Dakota)
Built 1959; rehabilitated 1980
Through truss bridge over Missouri River (Oahe Lake) on US 12
Open to traffic

Naches River Bridge (Yakima County, Washington)
Built 1958
Through truss bridge over Naches River on US 12 in Yakima
Open to traffic

Naches River Bridge (Yakima County, Washington)
Built 1966
Through truss bridge over Naches River on US 12 in Yakima
Open to traffic

Pataha Creek Bridge (Garfield County, Washington)
Built 1920
Concrete arch bridge over Pataha Creek on US 12
Open to traffic

Rimrock Tunnel (Yakima County, Washington)
Built 1936
Tunnel on US 12
Open to traffic

Satsop River Bridge (Grays Harbor County, Washington)
Built 1965
Steel through arch bridge over Satsop River on US 12 in Brady
Open to traffic

Snake River Bridge (Asotin County, Washington)
Built 1939
Vertical lift bridge over Snake River on US 12 in Clarkston
Open to traffic

Snake River Bridge (Franklin County, Washington)
Built 1986
Through truss bridge over Snake River on US 12 in Pasco
Open to traffic

Snake River Bridge (Franklin County, Washington)
Built 1950; rehabilitated 1988
Through truss bridge over Snake River on US 12 in Pasco
Open to traffic

St. Joseph River Bridge (Berrien County, Michigan)
Built 1919
Concrete arch bridge over St. Joseph River on Business US 12 in Niles
Open to traffic

Tieton River Bridge (Yakima County, Washington)
Built 1933
Through truss bridge over Tieton River on US 12
Open to traffic

Tieton River Bridge (Yakima County, Washington)
Built 1933
Pony truss bridge over Tieton River on US 12
Open to traffic

Touchet River Bridge (Walla Walla County, Washington)
Built 1900; rehabilitated 1936
Concrete arch bridge over Touchet River on US 12 in Touchet
Open to traffic

US 12 Bridge (Walla Walla County, Washington)
Built 1919; rehabilitated 1937
Concrete arch bridge over unnamed creek on US 12
Open to traffic

Walla Walla River Bridge (Walla Walla County, Washington)
Built 1917; rehabilitated 1933
Concrete arch bridge over Walla Walla River on US 12
Open to traffic

Wishkah River Bridge (Grays Harbor County, Washington)
Built 1925; rehabilitated 2003
Bascule bridge over Wishkah River on US 12 in Aberdeen
Open to traffic

Wishkah River Bridge (Grays Harbor County, Washington)
Built 1949
Swing bridge over Wishkah River on US 12 in Aberdeen
Open to traffic

Woodward Creek Bridge (Walla Walla County, Washington)
Built 1919; rehabilitated 1937
Concrete arch bridge over Woodward Creek on US 12
Open to traffic

Wynoochee River Bridge (Grays Harbor County, Washington)
Built 1935
Through truss bridge over Wynoochee River on US 12
Open to traffic