| 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 |
Darr Road North Branch Bridge
|
 | Darr Road Over North Branch Lincoln River | Rural: Mason County, Michigan | Metal 3 Panel Bolt-Connected Pratt Half-Hip Pony Truss, Fixed |
Total Length: 35.8 ft Main Span Length: 35.8 ft Roadway Width: 14 ft Main Spans: 1 |
By: Unknown | One of three rare bolted truss bridges all located in Mason County. | 
|
Darr Road South Branch Bridge
|
 | Darr Road Over South Branch Lincoln River | Rural: Mason County, Michigan | Metal 2 Panel Bolt-Connected Pratt Half-Hip Pony Truss, Fixed |
Total Length: 26 ft Main Span Length: 26 ft Roadway Width: 15.4 ft Main Spans: 1 |
By: Unknown | This tiny bridge has the smallest number of panels a Pratt can have. | 
| X |
La Salle Road Bridge
|
 | La Salle Road Over Big Sauble River | Rural: Mason County, Michigan | Metal 3 Panel Bolt-Connected Warren Pony Truss, Fixed |
Total Length: 45 ft Main Span Length: 45 ft Roadway Width: 15.7 ft Main Spans: 1 |
By: Unknown | This is one of the only examples of a bolted truss bridge in Michigan. | 
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