Idaho-Pacific Highway

Idaho-Pacific Highway Caldwell Bridge (Canyon County, Idaho)
Built 1894; Replaced 1922
Lost Pennsylvania through truss bridge over Boise River on Road
Replaced by a new bridge

Owsley Bridge (Gooding County, Idaho)
Built 1921
Through truss bridge over Snake River CR S 100 E
Open to traffic

West Plymouth Street Bridge (Canyon County, Idaho)
Built 1922
Polygonal Warren through truss bridge over Boise River on STC 7787
Open to traffic