|   | United States National Register of Historic Places |
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Iowa - Architect - Marsh Engineering Company
| Dunkerton Bridge |
| First Avenue Bridge |
| Mederville Bridge |
| River Street Bridge |
Data from United States Park Service and Wikidata
| Geography Tool Shed |
|   | United States National Register of Historic Places |
Search |
| Dunkerton Bridge |
| First Avenue Bridge |
| Mederville Bridge |
| River Street Bridge |
Data from United States Park Service and Wikidata