| 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 | X |
Balk Road Bridge
|
 | Balk Road Over Fawn River | Rural: St. Joseph County, Michigan | Metal 6 Panel Rivet-Connected Double-Intersection Warren Pony Truss, Fixed |
Total Length: 85 ft Main Span Length: 84 ft Roadway Width: 13 ft Main Spans: 1 |
1910 By: Unknown | A lightweight style bridge, this exhibits a rare truss configuration. | 
| X |
Big Hill Road Bridge
|
| Big Hill Road Over Fawn River | Rural: St. Joseph County, Michigan | Metal 5 Panel Pin-Connected Pratt Full-Slope Pony Truss, Fixed |
Total Length: 84 ft Main Span Length: 82 ft Roadway Width: 15.7 ft Main Spans: 1 |
1905 By: Unknown | A large, classic pin connected Pratt pony truss in a scenic setting. | 
|
Cowling Road Bridge
Old Gross Bridge |
 | Cowling Road (Old Alignment) Over Rocky River | Rural: St. Joseph County, Michigan | Concrete Closed Spandrel Deck Arch, Fixed | Main Spans: 2 | By: William Gross | This is one of the most unusual and fascinating concrete arch bridges in Michigan! | 
|
Haybridge Road Bridge
|
| Haybridge Road Over Fawn River | Rural: St. Joseph County, Michigan | Metal 4 Panel Pin-Connected Pratt Half-Hip Pony Truss, Fixed |
Total Length: 54.8 ft Main Span Length: 53.8 ft Roadway Width: 16 ft Main Spans: 1 |
1912 By: Unknown | An unusual pony truss sits out in the open for people to enjoy. | 
|
M-86 Bridge
|
 | M-86 Over Prairie River | Rural: St. Joseph County, Michigan | Metal 8 Panel Rivet-Connected Camelback Pony Truss, Fixed |
Total Length: 90 ft Main Span Length: 90 ft Roadway Width: 27 ft Main Spans: 1 |
1923 By: Unknown and Michigan State Highway Department | This is a good example of a 1920s pony truss built to a standard plan still serving its purpose in fair condition. | 
|
Marantette Bridge
Railroad Street Bridge |
| Railroad Street Over St. Joseph River | Mendon: St. Joseph County, Michigan | Metal 8 Panel Pin-Connected Pratt Through Truss, Fixed |
Total Length: 141 ft Main Span Length: 139 ft Roadway Width: 16 ft Main Spans: 1 |
By: Massillon Bridge Company of Massillon, Ohio | This bridge deserves to be restored as it is an unaltered pin-connected Pratt truss of considerable span length. | 
|
Mottville Bridge
|
 | US-12 (Old Alignment) Over St. Joseph River | Mottville: St. Joseph County, Michigan | Concrete 90 Foot Plan Curved Chord Through Girder, Fixed |
Total Length: 270 ft Main Span Length: 90 ft Roadway Width: 21 ft Main Spans: 3 |
1922 By: Smith and Nichols of Hastings, Michigan and Michigan State Highway Department | This three span structure is the longest concrete camelback in Michigan, and was preserved for pedestrians. | 
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