| 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 |
110th Street Bridge
Iowa Bridge Number 185150 |
 | 110th Street Over East Fork Des Moines River | Rural: Humboldt County, Iowa | Metal 5 Panel Pin-Connected Pratt Through Truss, Fixed and Approach Spans: Metal Stringer (Multi-Beam), Fixed |
Total Length: 110 ft Main Span Length: 90 ft Roadway Width: 15.7 ft Main Spans: 1 |
1911 By: Iowa Bridge Company of Des Moines, Iowa | A traditionally composed through truss bridge in a rural setting. | 
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Berkheimer Bridge
Iowa Bridge Number 184870 |
 | 215th Street Over West Fork Des Moines River | Rural: Humboldt County, Iowa | Metal 10 Panel Pin-Connected Pennsylvania Through Truss, Fixed and Approach Spans: Metal Stringer (Multi-Beam), Fixed |
Total Length: 253 ft Main Span Length: 170 ft Roadway Width: 15.1 ft Main Spans: 1 |
1899 By: Clinton Bridge and Iron Works of Clinton, Iowa | A rare Pennsylvania truss with excellent historic integrity. | 
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