| 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 |
Broadway Street Bridge
|
 | Broadway Street Over Chippewa River | Mt. Pleasant: Isabella County, Michigan | Concrete Closed Spandrel Deck Arch, Fixed |
Total Length: 94 ft Main Span Length: 88 ft Roadway Width: 35 ft Main Spans: 1 |
1910 By: Unknown | This is an old concrete arch bridge that has been altered by the replacement of its railings. | 
|
Isabella Road Bridge
|
 | Isabella Road Over Little Salt Creek | Rural: Isabella County, Michigan | Metal Stringer (Multi-Beam), Fixed |
Total Length: 31.8 ft Main Span Length: 28 ft Roadway Width: 20 ft Main Spans: 1 |
1938 By: Unknown | This tiny bridge is noteworthy as a product of the Works Progress Administration. | 
|
Lincoln Street Bridge
H. Edward Deuel Bridge |
 | Lincoln Street Over Chippewa River | Mt. Pleasant: Isabella County, Michigan | Concrete Closed Spandrel Deck Arch, Fixed |
Total Length: 75.8 ft Main Span Length: 70 ft Roadway Width: 25 ft Main Spans: 1 |
1910 By: Unknown | This is a very old concrete arch with a significant span length and is unusual for having a grade. | 
|
Mt. Pleasant Railroad Bridge
|
 | Railroad (Ann Arbor Railroad) Over Chippewa River | Mt. Pleasant: Isabella County, Michigan | Metal Deck Girder, Fixed and Approach Spans: Metal Stringer (Multi-Beam), Fixed | Main Spans: 1 | By: Unknown | A small railroad plate girder bridge. | 
|
Oak Street Bridge
Island Park Bridge |
 | Oak Street Over Chippewa River | Mt. Pleasant: Isabella County, Michigan | Metal 5 Panel Pin-Connected Pratt Full-Slope Pony Truss, Fixed |
Total Length: 70.5 ft Main Span Length: 69.6 ft Roadway Width: 10.5 ft Main Spans: 1 |
1890 By: Wrought Iron Bridge Company of Canton, Ohio | Beautifully preserved, this bridge has excellent integrity and displays the innovative, distinctive details of its builder. | 
| X |
Woodruff Road Bridge North
|
 | Woodruff Road Over Coldwater River | Rural: Isabella County, Michigan | Concrete Through Girder, Fixed |
Total Length: 79.7 ft Main Span Length: 40 ft Roadway Width: 21 ft Main Spans: 2 |
1926 By: W. J. Anschutz of Saginaw, Michigan and Michigan State Highway Department | This was a rare multi-span example of this particular style of concrete girder. | 
| ! |
Woodruff Road Bridge South
|
 | Woodruff Road Over Coldwater River | Rural: Isabella County, Michigan | Concrete Through Girder, Fixed |
Total Length: 45 ft Main Span Length: 41 ft Roadway Width: 21 ft Main Spans: 1 |
1926 By: Price Brothers Company of Lansing, Michigan and Michigan State Highway Department | Located near another girder, this bridge is also a good example of its type with good integrity. | 
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