| 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 |
Base Line Road Bridge
|
 | Base Line Road Over Local Creek/Drain | Rural: Algoma District, Ontario | Concrete T-Beam, Fixed | Main Spans: 1 | By: Unknown | An example of small scale bridge construction in Ontario. | 
|
Bellevue Valley Railway Bridge
|
 | Railroad (Algoma Central, Canadian National) Over Belleview Valley | Rural: Algoma District, Ontario | Metal Deck Girder, Fixed |
Total Length: 810 ft |
1915 By: Unknown | An impressive trestle style multi-span plate girder with attractive steel bent supports. | 
|
Echo River Bridge
Bay Street Bridge |
 | Bay Street Over Echo River | Echo Bay: Algoma District, Ontario | Metal 6 Panel Rivet-Connected Warren Pony Truss, Fixed | Main Spans: 2 | By: Unknown | A rare example of a multi-span pony truss in a scenic location. | 
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Echo River Railroad Bridge
|
 | Railroad Over Echo River | Echo Bay: Algoma District, Ontario | Metal Through Girder, Fixed | Main Spans: 1 | By: Unknown | This through plate girder features an unusual curved design. | 
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Emergency Swing Dam
|
 | Maintenance Walkway Over Sault Canal (St. Marys River) | Sault Ste. Marie: Algoma District, Ontario | Metal Pin-Connected Baltimore Through Truss, Movable: Swing (Center Pier) | Main Spans: 1 | 1898 By: Dominion Bridge Company of Montréal, Québec | This globally significant structure is a unique type of dam that can be deployed and held up by this beautiful swing bridge type structure. | 
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Goulais River Bridge
|
 | TC-17 (KH-17) Over Goulais River | Rural: Algoma District, Ontario | Metal 16 Panel Bolt-Connected Modified Warren (Subdivided) Through Truss, Fixed | Main Spans: 1 | 1959 By: Ardelt Industries of Canada | A late, 1959 truss bridge, this is still impressive to look at, and has an odd truss configuration. | 
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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 Cantilever (Suspended Deck) Bolt-Connected Warren Through Truss, Fixed and Approach Spans: Metal 8 Panel Bolt-Connected Warren Deck Truss, Fixed |
Total Length: 9280.6 ft Main Span Length: 430 ft Roadway Width: 28 ft Main Spans: 7 |
1962 By: Unknown and Steinman, Boynton, Gronquist and London of New York, New York | This is the monumental 2 3/4 Mile long highway bridge in Sault Ste Marie. | 
|
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 8 Panel Pin-Connected Camelback Through Truss, Fixed |
Total Length: 2151 ft Main Span Length: 239 ft Main Spans: 9 |
1887 By: Dominion Bridge Company of Montréal, Québec | This is the stationary multi-span Parker truss portion of the magnificent, monumental International Railroad Bridge. | 
|
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 Pin-Connected Baltimore Through Truss, Movable: Swing (Rim Bearing Center Pier) | Main Spans: 2 | 1887 By: Dominion Bridge Company of Montréal, Québec | This is the swing span portion of the magnificent, monumental International Railroad Bridge. | 
|
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 14 Panel Rivet-Connected Polygonal Warren Through Truss, Movable: Vertical Lift |
Total Length: 369 ft Main Span Length: 369 ft Roadway Width: 21 ft Main Spans: 1 |
1960 By: Unknown | With 175 foot towers and 70 ton counterweights, this is the vertical lift span portion of the magnificent, monumental International Railroad Bridge. | 
|
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 Rivet-Connected Pennsylvania Through Truss, Movable: Bascule (Heel Trunnion) |
Total Length: 336 ft Main Span Length: 336 ft Roadway Width: 23 ft Main Spans: 1 |
1913 By: Pennsylvania Steel Company of Steelton, Pennsylvania and Strauss Bascule Bridge Company of Chicago, Illinois | Designed by Strauss Bascule Bridge Company, this is the bascule span portion of the magnificent, monumental International Railroad Bridge. | 
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Searchmont Railway Bridge
|
 | Railroad (Canadian National, Algoma Central) Over Goulais River | London: Algoma District, Ontario | Metal 7 Panel Pin-Connected Parker Through Truss, Fixed | Main Spans: 1 | By: Unknown | A magnificent pin connected Parker truss in a breathtaking scenic location! | 
| ! |
Shewfelt Bridge
Old Goulais Road Bridge |
| Old Goulais Bay Road Over Goulais River | Rural: Algoma District, Ontario | Metal Double-Truss, Single-Story Bailey Pony Truss, Fixed | Main Spans: 2 | 1944 By: Unknown | An old and long example of a Bailey truss, piers for this bridge are failing, and now it faces demolition. | 
| X |
TC-17 Sault Ste Marie Bridge
Great Northern Road Bridge |
 | TC-17 / KH-17 (Great Northern Road) Over Root River | Sault Ste Marie: Algoma District, Ontario | Concrete Rigid-Frame, Fixed | Main Spans: 1 | By: Unknown | Replaced in 2011, this was an example of an attractive Ontario standard plan bridge. | 
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