Pacific Short Line Bridge (Woodbury County, Iowa)
Grand Avenue Viaduct (Woodbury County, Iowa)
Lower Plymouth Rock Bridge (Winneshiek County, Iowa)
Eureka Bridge (Winneshiek County, Iowa)
Hawkeye Avenue Bridge (Webster County, Iowa)
Covered Bridge (Warren County, Iowa)
Tama Lincoln Highway Bridge (Tama County, Iowa)
Centennial Bridge (Scott County, Iowa)
86th Street Overpass (Polk County, Iowa)
SE 14th St. Bridge (Polk County, Iowa)
Plattsmouth Bridge (Mills County, Iowa)
South Third Avenue Bridge (Marshall County, Iowa)
Rock Valley Bridge (Marshall County, Iowa)
Honey Creek Bridge (Marshall County, Iowa)
Middle Creek Bridge (Mahaska County, Iowa)
Imes Covered Bridge (Madison County, Iowa)
Bevington Bridge (Madison County, Iowa)
Melan Bridge (Lyon County, Iowa)
Sutton Road Bridge (Linn County, Iowa)
Keokuk Rail Bridge (Lee County, Iowa)
Fort Madison Bridge (Lee County, Iowa)
Bridgeport Bridge (Lee County, Iowa)
Corbett's Mill Bridge (Jones County, Iowa)
Hale Bridge (Jones County, Iowa)
Supple Ford Bridge (Jones County, Iowa)
Wapsipinicon River Bridge (Jones County, Iowa)
Benton Street Bridge (Johnson County, Iowa)
Marsh Rainbow Arch Bridge (Jasper County, Iowa)
Mill Rock Bridge (Jackson County, Iowa)
Hardin City Bridge (Hardin County, Iowa)
Cottonville Bridge (Jackson County, Iowa)
Davis Bridge (Howard County, Iowa)
Boyleston Bridge (Henry County, Iowa)
Illinois Central Railroad Overpass (Hardin County, Iowa)
Eveland Bridge (Mahaska County, Iowa)
Cedar River Bridge (Floyd County, Iowa)
West Auburn Bridge (Fayette County, Iowa)
Dietzenbach Bottom Bridge (Fayette County, Iowa)
Ellsworth Ranch Bridge (Emmet County, Iowa)
White Water Creek Bridge (Dubuque County, Iowa)
Okoboji Bridge (Dickinson County, Iowa)
Sixth Street Viaduct (Des Moines County, Iowa)
Burlington Rail Bridge (Des Moines County, Iowa)
MacArthur Bridge (Des Moines County, Iowa)
Euritt Bridge Over Grand River (Decatur County, Iowa)
Nishnabotna River Bridge Manilla Vacinity (Crawford County, Iowa)
Winnebago River US 65 Bridge (Cerro Gordo County, Iowa)
Lake City Bridge (Calhoun County, Iowa)
Lake City Bridge (Calhoun County, Iowa)
Waverly Junction Bridge (Bremer County, Iowa)
Gilbert Street Bridge (Floyd County, Iowa)
Kate Shelly High Bridge (Boone County, Iowa)
Des Moines River Bridge (Boone County, Iowa)
Kate Shelly High Bridge (Boone County, Iowa)
White Water Creek Bridge (Dubuque County, Iowa)
Des Moines River Bridge (Boone County, Iowa)
Beaver Creek (Original) Lincoln Highway (Boone County, Iowa)
Beaver Creek Bridge (Boone County, Iowa)
Eagle Point Bridge (Dubuque County, Iowa)
Des Moines River Bridge (Boone County, Iowa)
Eveland Bridge (Mahaska County, Iowa)
Keigley Branch Bridge (Story County, Iowa)
Kilbourn Bridge (Van Buren County, Iowa)
Red Bridge (Allamakee County, Iowa)
Mederville Bridge (Clayton County, Iowa)
Twin Bridge (Fayette County, Iowa)
Plattsmouth Bridge (Mills County, Iowa)
Jefferson Street Viaduct (Wapello County, Iowa)
Kilbourn Bridge (Van Buren County, Iowa)
Keigley Branch Bridge (Story County, Iowa)
Court Avenue Bridge (Polk County, Iowa)
Southwest Fifth Street Bridge (Polk County, Iowa)
Eveland Bridge (Mahaska County, Iowa)
Twin Bridge (Fayette County, Iowa)
Cascade Bridge (Des Moines County, Iowa)