| 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 |
Imperial Avenue Bridge
Ridge Road Bridge (Iowa Number 197890) |
 | Imperial Avenue (Ridge Road) Over North Skunk River | Kellogg: Jasper County, Iowa | Metal 6 Panel Pin-Connected Pratt Through Truss, Fixed and Approach Spans: Metal Stringer (Multi-Beam), Fixed |
Total Length: 240.2 ft Main Span Length: 100 ft Roadway Width: 15.4 ft Main Spans: 1 |
1898 By: Unknown | An attractive pin-connected truss bridge sits unused and abandoned, ready for a restoration. | 
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