| 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 |
10 Curves Road Bridge
|
 | 10 Curves Road (CR-498) Over Manistique River | Rural: Schoolcraft County, Michigan | Concrete 60 Foot Plan Curved Chord Through Girder, Fixed |
Total Length: 60 ft Main Span Length: 57.7 ft Roadway Width: 22 ft Main Spans: 1 |
1929 By: Unknown and Michigan State Highway Department | This is one of two beautiful but deteriorated concrete camelback bridges on this road. | 
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Elm Street Bridge
|
 | Elm Street (New Elm Street) Over Manistique River | Manistique: Schoolcraft County, Michigan | Concrete Slab, Fixed and Approach Spans: Concrete T-Beam, Fixed | Main Spans: 5 | By: Unknown | One of two unusual bridges that cross the river and associated flume. | 
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Fox River Railroad Bridge
|
 | Railroad (Canadian National) Over Fox River | Seney: Schoolcraft County, Michigan | Metal Through Girder, Fixed and Approach Spans: Wood Stringer (Multi-Beam), Fixed | Main Spans: 1 | By: Unknown | This is a good representative example of a small through plate girder. | 
| ! |
Germfask Bridge
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| Ten Curves Road (CR-498) Over Manistique River | Germfask: Schoolcraft County, Michigan | Concrete 90 Foot Plan Curved Chord Through Girder, Fixed |
Total Length: 90 ft Main Span Length: 90 ft Roadway Width: 22 ft Main Spans: 1 |
1923 By: Harry Ericksen of Manistique, Michigan and Michigan State Highway Department | A rare example of Michigan's nationally significant 90 foot concrete camelback bridge design. | 
|
Port Inland Road Bridge
|
 | Port Inland Road (CR-432) Over Milakokia River | Rural: Schoolcraft County, Michigan | Metal Stringer (Multi-Beam), Fixed |
Total Length: 63 ft Main Span Length: 60 ft Roadway Width: 30.8 ft Main Spans: 1 |
1931 By: Perkins Bridge and Supply Company | A remnant of the trunk line past of this road, this bridge is a good example of a steel stringer with balustrade railings. | 
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Railroad Street Bridge
|
 | Railroad Street Over Fox River | Seney: Schoolcraft County, Michigan | Metal Stringer (Multi-Beam), Fixed |
Total Length: 79.7 ft Main Span Length: 40 ft Roadway Width: 30 ft Main Spans: 2 |
By: Unknown and Michigan State Highway Department | This bridge was once part of M-28. | 
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Siphon Bridge
|
 | M-94 (Deer Street) Over Manistique River | Manistique: Schoolcraft County, Michigan | Concrete Continuous Slab, Fixed and Approach Spans: Concrete T-Beam, Fixed |
Total Length: 296 ft Main Span Length: 44 ft Roadway Width: 42 ft Main Spans: 5 |
1918 By: Manistique Pulp and Paper Company of Manistique, Michigan | With a roadway that once was lower than the water it crosses, this bridge is an unusual structure that crosses an equally unusual waterway. | 
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