| Special Bridge Conditions Legend |
| ! | Confirmed demolition date within one year or an especially historic bridge that is threatened with demolition at any level. |
| X | The bridge has been confirmed demolished or collapsed. |
| S | The bridge has been dismantled or moved to an offsite location and is not currently available for public viewing. |
| L | Most or all of the original bridge material has been demolished and replaced, including historically significant elements, but some original parts of the bridge remain. |
| Note: This website cannot guarantee the current condition of any bridge on this website. Bridges lacking these icons should not necessarily be considered condition-free. |
| Bridge Name | HSR Rating | Facility Carried / Feature Intersected | Location | Structure Type | Structure Dimensions | Construction Date / Builder or Contractor | Description | Thumbnail |
Fischer Road Bridge
Iowa Bridge Number 145610 |
 | Fischer Road Over Prairie Creek | Rural: Dubuque County, Iowa | Metal 5 Panel Pin-Connected Pratt Through Truss, Fixed |
Total Length: 81 ft Main Span Length: 80 ft Roadway Width: 15.7 ft Main Spans: 1 |
1901 By: Clinton Bridge and Iron Works of Clinton, Iowa | An attractive example of a bridge built by a noteworthy and prolific Iowa bridge builder. | 
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Washington Mill Bridge
Iowa Bridge Number 145870 |
 | Creek Branch Lane Over Prairie Creek | Rural: Dubuque County, Iowa | Metal Pin-Connected Bowstring Through Truss, Fixed |
Total Length: 114.2 ft Main Span Length: 113.2 ft Roadway Width: 13.8 ft Main Spans: 1 |
1878 By: Massillon Bridge Company of Massillon, Ohio | An extremely rare example of a Massillon bowstring, this bridge features their unique pole and plate top chord. | 
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