| 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. |
| 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 | Facility Carried / Feature Intersected | Location | Structure Type | Construction Date / Builder or Contractor | Description | Thumbnail | X |
Aitken Road Bridge
| Aitken Road Over Black River | Rural: Sanilac County, Michigan | Metal Stringer, Stationary | 1950 By: Unknown | This beam bridge, having had its railings replaced, was mainly noted for a highly unusual concrete pier. | 
|
Cash Road Bridge
| Cash Road Over Elk Creek | Cash (Rural): Sanilac County, Michigan | Metal Riveted Warren Pony Truss, Stationary | 1910 By: Unknown | This wooden deck warren pony truss was moved to private property. | 
| X |
Church Road Bridge
| Church Road Over Black River | Rural (Near Carsonville): Sanilac County, Michigan | Metal Riveted Pratt Through Truss, Stationary | 0 By: Continental Bridge Company | Sanilac County chose to demolish their last through truss, which was located a quiet rural road. | 
|
Croswell Swinging Bridge
| Park Path Over Black River | Croswell: Sanilac County, Michigan | Metal Swinging Cable Suspension, Stationary | 1905 By: Unknown | A strange, heavily modified bridge is one of the few remaining historic bridges in the county. | 
|
Fox Road Bridge
| Fox Road Over Elk Creek | Rural: Sanilac County, Michigan | Metal Riveted Queenpost Pony Truss, Stationary | 0 By: Unknown | This unusual queenspost-like bridge has only been spared demolition because it is on an abandoned section of road. | 
| X |
Galbraith Line Bridge
| Galbraith Line Over Black River | Rural: Sanilac County, Michigan | Metal Through Girder, Stationary | 0 By: Unknown | A memorial page to a rare bridge: a large highway plate girder. | 
| X |
M-46 Bridge
| M-46 (Sanilac Road) Over South Branch Cass River | Rural: Sanilac County, Michigan | Metal Stringer, Stationary | 1930 By: Unknown | Although modern railings were mounted in front of the originals, this is still a decent bridge. | 
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M-90 Bridge
Peck Road Bridge | M-90 (Peck Road) Over Black River | Croswell: Sanilac County, Michigan | Metal Stringer, Stationary | 1947 By: F.C. Atletwed | One of the last remaining historic bridges of any kind in Sanilac County. | 
| X |
Nicol Road Bridge
| Nicol Road Over Black River | Rural: Sanilac County, Michigan | Metal Riveted Warren Pony Truss, Stationary | 1905 By: Unknown | The last public truss bridge in Sanilac County, this structure was demolished, despite its remarkably excellent truss condition. | 
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Turntable Bridge
| Railroad (Abandoned) Over Black River | Rural: Sanilac County, Michigan | Metal Deck Girder, Stationary | 1926 By: American Bridge Company of New York, New York | This fascinating bridge's main span is a reused railroad turntable! | 
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