| 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 |
Hillman Bridge
M-32 Spur Bridge | M-32 Spur (State Street) Over Thunder Bay River | Hillman: Montmorency County, Michigan | Concrete 70 Foot Plan Curved Chord Through Girder, Stationary | 1922 By: Unknown | Although nationally significant as the last of its kind, MDOT demolished this beautiful bridge. | 
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Ulshaffer Road Bridge
| Ulshaffer Road Over Thunder Bay River | Rural: Montmorency County, Michigan | Metal Pinned Pratt Half-Hip Pony Truss, Stationary | 0 By: Unknown | A secluded pony truss with interesting beams under the deck. | 
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