A.H. Austin

of Webster City, Iowa
Albright Bridge (Hamilton County, Iowa)
Built 1907
Pratt through truss bridge over Boone River on Inkpaduta Avenue
Open to traffic

Armstrong Gravel Pit Bridge (Emmet County, Iowa)
Built 1899
Derelict through truss bridge over East Fork Des Moines River northwest of Armstrong
Privately owned

Lewis Street Bridge (Humboldt County, Iowa)
Built 1906
Lost two-span through truss bridge over West Fork Des Moines River on Lewis Street in Humboldt
No longer exists

Murray Bridge (Humboldt County, Iowa)
Built 1905
Through truss bridge over West Fork Des Moines River on 190th Street, southeast of Bradgate
Open to traffic

Old US 20 Bridge (Hamilton County, Iowa)
Lost Pratt through truss bridge over Boone River on US 20 (East 2nd Street)
Replaced by a new bridge