Buckeye Campground Bridge (Mono County, California)
Built 1978; rehabilitated 1988
Pony truss bridge over Buckeye Creek on Buckeye Campground
Open to traffic

Cairo I-57 Bridge (Alexander County, Illinois)
Built 1978
Steel through arch bridge carrying I-57 over the Mississippi River at Cairo
Open to four lanes of traffic

Cape County Road 274 Bridge (Cape Girardeau County, Missouri)
Built 1978
Two-span stringer bridge with wooden deck over a drainage ditch on CR 274 at the Cape-Stoddard county line
Replaced by a new bridge

Columbia River Bridge (Benton County, Washington)
Built 1978
Cable-stayed bridge over Columbia River on WA 397 in Kennewick
Open to traffic

Curtis Creek Bridge (Baltimore, Maryland)
Built 1978; rehabilitated 2003
Bascule bridge over Curtis Creek on I-695 Inner Lanes in Baltimore
Open to traffic

Heron Lake Outlet Bridge (Jackson County, Minnesota)
Built 1978 replacing 100 ft. long Pratt through truss bridge with W-frame portal bracings built in 1913
Stringer bridge over Heron Lake Outlet on Cr 86
Open to traffic

Michigan Street Bridge (Milwaukee County, Wisconsin)
Built 1978
Vertical lift bridge over Milwaukee River on Michigan Street in Milwaukee
Open to traffic

Ouachita River LA 3280 Bridge (Ouachita Parish, Louisiana)
Built 1978
Swing bridge over Ouachita River on LA 3280 in Monroe
Open to traffic

Rockpile Road Bridge (Sonoma County, California)
Built 1978
Deck truss bridge over Warm Springs Creek on Rockpile Road
Open to traffic

Seven Mile Creek Bridge (Cass County, Iowa)
Built 1978
Pony truss bridge over Seven Mile Creek on a local road
Open to traffic

South Fork Clanton Creek Bridge (Madison County, Iowa)
Built 1978
Pony truss bridge over South Fork Clanton Creek on a local road
Open to traffic

Sturgeon Bay Bridge (Door County, Wisconsin)
Built 1978
Bascule bridge over Sturgeon Bay on WI 42/WI 57 in Sturgeon Bay
Open to traffic

Turkey Creek Bridge (Cass County, Iowa)
Built 1978
Pony truss bridge over Turkey Creek on a local road
Open to traffic

Unnamed Creek Bridge (Taylor County, Iowa)
Built 1978
Pony truss bridge over an unnamed creek on a local road
Open to traffic

Unnamed Creek Bridge (Taylor County, Iowa)
Built 1978
Pony truss bridge over an unnamed creek on a local road
Open to traffic

Viet Nam Veterans Memorial Bridge (Ohio County, West Virginia)
Built 1978
Steel through arch bridge over Ohio River on Interstate 470
Open to traffic

West Nodaway River Bridge (Cass County, Iowa)
Built 1978
Pony truss bridge over West Nodaway River on a local road in Massena
Open to traffic

Willow Creek Bridge (Monona County, Iowa)
Built 1978
Through truss bridge over Willow Creek on a local road
Open to traffic