A. Olson Construction Co.

of Waterloo, Iowa
Boone Bridge (Boone County, Iowa)
Contractor, 1928
Lost Parker through truss bridge over Des Moines River on Lincoln Highway
Replaced by a new bridge

Cherry Street Bridge (Butler County, Iowa)
Built 1900
Arch bridge over a drainage ditch on Cherry Street in Shell Rock
Open to traffic

Kendallville Bridge (Winneshiek County, Iowa)
Built 1930
Lost Bridge over Upper Iowa River on Old alignment of Iowa 139
Replaced by a new bridge

Keosauqua Bridge (Van Buren County, Iowa)
Built 1939
Lost through truss bridge over Des Moines River on IA 1 in Keosauqua
Replaced by new bridge