William M. Thomas

Black Canyon Road Bridge (San Diego County, California)
Design Engineer, 1913
Open spandrel Concrete arch bridge over Santa Ysabel Creek on Black Canyon Road
Bypassed and kept open to pedestrians only

Cottonwood Creek Bridge (Madera County, California)
Built 1914
Concrete tee beam bridge over Cottonwood Creek on Road 28
Replaced by a new bridge

Parks Bar Bridge (1913) (Yuba County, California)
Engineer, 1913
Lost open-spandrel arch bridge over Yuba River on CA 20
Replaced in 1993 and destroyed.

Rowdy Creek Bridge (Del Norte County, California)
Design Engineer, 1913
Lost Concrete deck girder bridge over Rowdy Creek on Fred D. Haight Drive
Replaced by new bridge

Thomas Bridge (Shawnee County, Kansas)
Built ca. 1916
Preserved Open Spandrel bridge over Wakarusa River on Wanamaker Road, southeast of Auburn
Intact but closed to all traffic