Hedrick & Cochrane

of Kansas City, Missouri
Dallas-Oak Cliff Viaduct (Dallas County, Texas)
Consulting Engineers, 1911
Open-spandrel arch bridge over Trinity River on Houston Street in Dallas
Open to one-way southbound traffic

F Avenue Bridge (Linn County, Iowa)
Designer, 1914
Lost Closed-spandrel arch bridge over Cedar Rapids on B/F Avenue
Removed