General Construction Co. of St. Louis, Missouri

Blue River Bridge (Bryan County, Oklahoma)
Built 1921
Pratt through truss bridge over Blue River on old US Highway 70
Open to traffic

Caddo Creek Bridge (Bryan County, Oklahoma)
Built 1921
Pratt through truss bridge over Caddo Creek on old US Highway 70
Open to traffic

Sand Creek Bridge (Bryan County, Oklahoma)
Built 1921
Pony truss bridge over Sand Creek on River Road
Open to traffic