| 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 | ! |
Carl Worth Road Bridge
Worth Road Bridge |
 | Carl Worth Road (FH-40) Over Little Brevort River | Rural: Mackinac County, Michigan | Concrete Through Girder, Fixed |
Total Length: 45 ft Main Span Length: 36.7 ft Roadway Width: 22 ft Main Spans: 1 |
1922 By: Unknown and Michigan State Highway Department | This is the only example of a concrete girder bridge in Mackinac County. | 
|
Cut River Bridge
|
 | US-2 Over Cut River | Rural: Mackinac County, Michigan | Metal Cantilever 12 Panel Rivet-Connected Pratt Deck Truss, Fixed and Approach Spans: Concrete T-Beam, Fixed |
Total Length: 641 ft Main Span Length: 300 ft Roadway Width: 30 ft Main Spans: 3 |
1947 By: Wisconsin Bridge and Iron Company of Milwaukee, Wisconsin and Michigan State Highway Department | Among the largest bridges in Michigan, this is a very large deck cantilever bridge whose construction was interrupted by World War II. | 
|
Mackinac Bridge
Big Mac / Mighty Mac |
 | I-75 Over Straits of Mackinac | Mackinaw City and St. Ignace: Emmet County, Michigan and Mackinac County, Michigan | Metal 96 Panel Deck Truss Stiffening Wire Cable Suspension, Fixed and Approach Spans: Metal Continuous Bolt-Connected Warren Deck Truss, Fixed |
Total Length: 19248.6 ft Main Span Length: 3800 ft Roadway Width: 48 ft Main Spans: 3 |
1957 By: American Bridge Company of New York, New York and David Steinman of New York, New York | The longest bridge in the western hemisphere, designed by David B. Steinman. | 
| ! |
Mackinac Trail Bridge
|
 | Mackinac Trail Over Carp River | Rural: Mackinac County, Michigan | Concrete Closed Spandrel Deck Arch, Fixed |
Total Length: 60 ft Main Span Length: 59.7 ft Roadway Width: 22 ft Main Spans: 1 |
1920 By: A. S. Decker of Flint, Michigan and Michigan State Highway Department | This attractive arch bridge has several unusual details. | 
| X |
Rutledge Road Bridge
|
 | Rutledge Road Over Munuscong River | Rural: Mackinac County, Michigan | Metal 5 Panel Rivet-Connected Warren Pony Truss, Fixed |
Total Length: 81 ft Main Span Length: 81 ft Roadway Width: 17.4 ft Main Spans: 1 |
1914 By: Central States Bridge Company of Indianapolis, Indiana | A beautiful, yet unusual, former trunkline bridge with historic integrity. | 
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