| 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 |
10 Mile Road Bridge
| 10 Mile Road Over Charlotte River | Rural: Chippewa County, Michigan | Metal Riveted Warren Pony Truss, Stationary | 1914 By: Minneapolis Bridge Company of Minneapolis, Minnesota | A rare example of a lightweight style pony truss. | 
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Ashmun Street Bridge
| Ashmun Street (I-75 BS) Over Power Canal | Sault Ste Marie: Chippewa County, Michigan | Metal Arch, Stationary | 1935 By: Fry and Cain | One of the most beautiful and rarest bridges in Michigan, this unique, massive trussed steel arch bridge provides an impressive clear span over the canal. | 
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Dafter Road Bridge
| Dafter Road Over I-75 | Rural: Chippewa County, Michigan | Metal Stringer, Stationary | 1964 By: Pierson Contracting Company | Featuring unusual steel bent supports, this is a smaller and more modified version of the M-48 Bridge also in this county. | 
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Fort Street Bridge
| Fort Street Over Power Canal | Sault Ste. Marie: Chippewa County, Michigan | Metal Pinned Pennsylvania Through Truss, Stationary | 1902 By: New Castle Bridge Company of New Castle, Indiana | A gorgeous example of its type, this is one of only two Pennsylvania truss bridges in Michigan. | 
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International Bridge
| I-75 / TC-17B Over St. Marys River and Associated Canal System | Sault Ste. Marie: Chippewa County, Michigan and Algoma District, Ontario | Metal Through Arch, Stationary | 1962 By: Steinman, Boyton, Gronquist, and London | This is the monumental 2 3/4 Mile long highway bridge in Sault Ste Marie. | 
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International Railroad Bridge
Camelback Truss Bridge Spans | Railroad (Wisconsin Central) Over St. Marys River and Associated Canal System | Sault Ste. Marie: Chippewa County, Michigan and Algoma District, Ontario | Metal Pinned Camelback Through Truss, Stationary | 1887 By: Dominion Bridge Company of Montreal, Quebec | This is the stationary multi-span Parker truss portion of the magnificent, monumental International Railroad Bridge. | 
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International Railroad Bridge
Swing Bridge Span | Railroad (Wisconsin Central) Over St. Marys River and Associated Canal System | Sault Ste. Marie: Chippewa County, Michigan and Algoma District, Ontario | Metal Pinned Baltimore Through Truss, Movable: Swing | 1887 By: Dominion Bridge Company of Montreal, Quebec | This is the swing span portion of the magnificent, monumental International Railroad Bridge. | 
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International Railroad Bridge
Vertical Lift Bridge Span | Railroad (Wisconsin Central) Over St. Marys River and Associated Canal System | Sault Ste. Marie: Chippewa County, Michigan and Algoma District, Ontario | Metal Riveted Polygonal Warren Through Truss, Movable: Vertical Lift | 0 By: Unknown | This is the vertical lift span portion of the magnificent, monumental International Railroad Bridge. | 
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International Railroad Bridge
Bascule Bridge Span | Railroad (Wisconsin Central) Over St. Marys River and Associated Canal System | Sault Ste. Marie: Chippewa County, Michigan and Algoma District, Ontario | Metal Riveted Pennsylvania Through Truss, Movable: Bascule | 0 By: Unknown | This is the bascule span portion of the magnificent, monumental International Railroad Bridge. | 
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M-48 Bridge
| M-48 Over I-75 | Rural: Chippewa County, Michigan | Metal Stringer, Stationary | 1963 By: Gilliland Construction Company | This is an extremely unusual expressway overpass that features beam approach spans supported by v-laced and riveted steel bents! | 
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