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Historic Bridges: St. Lawrence River (Fleuve Saint-Laurent)

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S  - Dismantled and/or in storage. L -  Severe loss of historic integrity due to alteration.


Results in this list will be limited to the first 200 results. Consider performing a more narrow search from the main BridgeSeek tool if your search here is showing 200 results.

Total Bridges Found: 7

Ogdensburg-Prescott Bridge
Seaway Skyway Bridge
HSRNational HSR. Local HSR.
Click to visit page.
NY-812 Over St. Lawrence River (Fleuve Saint-Laurent) in Prescott and Ogdensburg: Leeds and Grenville United Counties, Ontario and St. Lawrence County, New York, Canada
Metal Pony Truss Stiffening Wire Cable Suspension, Fixed and Approach Spans: Metal 10 Panel Rivet-Connected Warren Deck Truss, Fixed
Length: 7,385 ft. Main Span: 1,143 ft. Roadway: 26 ft. Main Spans: 3
Built 1960 By: American Bridge Company of New York, New York and Modjeski and Masters
Click to visit page.
Autoroute 10, Autoroute 15, and Autoroute 20 Over St. Lawrence River (Fleuve Saint-Laurent) in Montréal and Brossard: Montréal, Québec and Montérégie, Québec, Canada
Metal Cantilever Bolt-Connected Warren Through Truss, Fixed and Approach Spans: Metal Bolt-Connected Warren Deck Truss, Fixed
Length: 11,286 ft. Main Span: 707 ft. Roadway: 74 ft. Main Spans: 3
Built 1962 By: Dominion Bridge Company of Montréal, Québec and Philip Louis Pratley and Henry Hugh Lewis Pratley
Pont de Québec
Quebec Bridge
HSRNational HSR. Local HSR.
Click to visit page.
QC-175 and Railroad (Canadian National) Over St. Lawrence River (Fleuve Saint-Laurent) in Québec City and Lévis: Capitale-Nationale, Québec and Chaudiére-Appalaches, Québec, Canada
Metal Cantilever Pin-Connected K-Truss Through Truss, Fixed and Approach Spans: Metal Rivet-Connected Warren Deck Truss, Fixed
Length: 3,239 ft. Main Span: 1,800 ft. Roadway: 94 ft. Main Spans: 3
Built 1917 By: St. Lawrence Bridge Company of Montréal, Québec and George Herrick Duggan, Ralph Modjeski, and Others
Click to visit page.
Railroad (Canadian National) Over St. Lawrence River (Fleuve Saint-Laurent) in Coteau-du-Lac and Salaberry-de-Valleyfield: Montérégie, Québec, Canada
Metal 12 Panel Rivet-Connected Camelback Through Truss, Movable: Swing (Rim Bearing Center Pier) and Approach Spans: Metal 8 Panel Rivet-Connected Camelback Through Truss, Fixed
Length: 3,900 ft. Main Span: 355 ft. Main Spans: 1
Built By: Unknown
Click to visit page.
Railroad (Canadian Pacific) Over St. Lawrence River (Fleuve Saint-Laurent) in Montréal and Kahnawake: Montréal, Québec and Montérégie, Québec, Canada
Metal 18 Panel Rivet-Connected Pennsylvania Through Truss, Fixed and Approach Spans: Metal 8 Panel Rivet-Connected Warren Deck Truss, Fixed
Length: 3,660 ft. Main Span: 409 ft. Main Spans: 2
Built 1913 By: Dominion Bridge Company of Montréal, Québec
Click to visit page.
Autoroute 55 Over St. Lawrence River (Fleuve Saint-Laurent) in Trois-Rivières and Bécancour: Mauricie, Québec, Canada
Metal Cantilever (Arch and Suspended Deck) Bolt-Connected Warren Through Truss, Fixed and Approach Spans: Corrugated Multi-Plate Bolt-Connected Warren Through Truss, Fixed
Length: 8,881 ft. Main Span: 1,100 ft. Main Spans: 3
Built 1967 By: Dominion Bridge Company of Montréal, Québec and Georges Demers
Click to visit page.
Autoroute 73 (Autoroute Robert-Cliche) Over St. Lawrence River (Fleuve Saint-Laurent) in Québec City and Lévis: Capitale-Nationale, Québec and Chaudiére-Appalaches, Québec, Canada
Metal Deck Truss Stiffening Wire Cable Suspension, Fixed and Approach Spans: Concrete Stringer (Multi-Beam), Fixed
Length: 4,461 ft. Main Span: 2,190 ft. Main Spans: 3
Built 1970 By: Unknown and Parsons Brinckerhoff of New York, New York and Demers, Vaudry, Gronquist

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