CN Drainage Bridge (Linn County, Iowa)
IANR Hinkle Creek Bridge (Benton County, Iowa)
22nd Avenue Bridge (Benton County, Iowa)
Branch Blue Creek Bridge (Linn County, Iowa)
Cottage Grove Avenue WPA Bridge (Linn County, Iowa)
Quasqueton Avenue Bridge (Buchanan County, Iowa)
Muscatine Bridge (Muscatine County, Iowa)
Cottage Grove Avenue WPA Bridge (Linn County, Iowa)
CN Main Street Overpass (Central City) (Linn County, Iowa)
Spencers Grove Bridge (Benton County, Iowa)
Cedar Valley Nature Trail Apple Creek Bridge (Linn County, Iowa)
Spencers Grove Bridge (Benton County, Iowa)
Driveway Bridge (Linn County, Iowa)
Vine Street Bridge (Linn County, Iowa)
CNW Iowa River Bridge (Benton County, Iowa)
Spencers Grove Bridge (Benton County, Iowa)
IAIS Big Bear Creek Bridge (Iowa County, Iowa)
IAIS Big Bear Creek Bridge (Iowa County, Iowa)
Waterworks Park Bridge (Polk County, Iowa)
DM&E Iowa River Bridge (Tyson Spur) (Louisa County, Iowa)
DM&E Iowa River Bridge (Mainline) (Louisa County, Iowa)
RI Iowa River Bridge (Old) (Louisa County, Iowa)
RI Iowa River Bridge (Old) (Louisa County, Iowa)
Heins Road Bridge (Linn County, Iowa)
Quasqueton Avenue Bridge (Buchanan County, Iowa)
Branch Blue Creek Bridge (Linn County, Iowa)
Apple Creek Bridge (Linn County, Iowa)
Union Station (Unbuilt) (Polk County, Iowa)
Cedar Valley Nature Trail Wolf Creek Bridge (Black Hawk County, Iowa)
IANR Wolf Creek Bridge (Black Hawk County, Iowa)
Cedar Valley Nature Trail Apple Creek Bridge (Linn County, Iowa)
Abandoned MILW Prairie Creek Bridge #2 (Linn County, Iowa)
Cedar Valley Nature Trail Fischel Road Overpass (Linn County, Iowa)
Cedar Valley Nature Trail East Otter Creek Bridge (Linn County, Iowa)