| 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 |
Charlevoix Bridge
|
 | US-31 (Michigan Avenue / Bridge Street) Over Pine River | Charlevoix: Charlevoix County, Michigan | Metal Deck Girder, Movable: Bascule and Approach Spans: Metal Stringer (Multi-Beam), Fixed |
Total Length: 222.8 ft Main Span Length: 111 ft Roadway Width: 44 ft Main Spans: 1 |
1948 By: L. W. Lamb Company of Jackson, Michigan and Hazelet and Erdal of Chicago, Illinois | A classic Michigan plate girder bascule bridge with unusual altered guardrails. | 
|
Iron Bridge Road Bridge
|
 | Iron Bridge Road Over West Branch Sturgeon River | Rural: Charlevoix County, Michigan | Metal 3 Panel Pin-Connected Pratt Half-Hip Pony Truss, Fixed |
Total Length: 41 ft Main Span Length: 40 ft Roadway Width: 16 ft Main Spans: 1 |
By: Unknown | Located in a wild and scenic area, this little pony truss was restored! | 
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US-31 Railroad Overpass
|
 | Railroad (Abandoned Chesapeake and Ohio) Over US-31 | Rural: Charlevoix County, Michigan | Metal Through Girder, Fixed |
Total Length: 259 ft Main Span Length: 98.8 ft Main Spans: 3 |
1948 By: L. W. Lamb Company of Jackson, Michigan and Michigan State Highway Department | With a heavy skew, this is a decent sized three span plate girder overpass in a scenic location. | 
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