| 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 |
Ash Street Bridge
| Ash Street Over Sycamore Creek | Mason: Ingham County, Michigan | Concrete T-Beam, Stationary | 1918 By: J. Morehouse | This unusual design t-beam bridge is one of the oldest of its structure type in Michigan. | 
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Holt Road Bridge
| Holt Road Over Deer Creek | Rural: Ingham County, Michigan | Metal Stringer, Stationary | 1920 By: Unknown | A small beam bridge with gothic fence style guardrails. | 
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Mason Railroad Bridge
| Railroad (Norfolk Southern) Over Sycamore Creek | Mason: Ingham County, Michigan | Stone Deck Arch, Stationary | 0 By: Unknown | This is a small stone arch bridge that is easy to view and photograph. | 
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Okemos Road Northbound Bridge
| Okemos Road Northbound Over Red Cedar River | Okemos: Ingham County, Michigan | Concrete 90 Foot Plan Curved Chord Through Girder, Stationary | 1924 By: Unknown | This gorgeous structure was restored, setting a great example that few Michigan counties have had the sense to follow. | 
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Okemos Road Southbound Bridge
| Okemos Road Southbound Over Red Cedar | Okemos: Ingham County, Michigan | Metal Stringer, Stationary | 1958 By: W. L. Eva | This steel stringer sits next to an impressive concrete camelback, forming an attractive couplet of bridges. | 
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