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Thousand Islands Bridge
North Channel (Canadian) Bridge
HSRNational HSR. Local HSR.

Rough Distance: 0 Miles (0 Kilometers)

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KH-137 Over St. Lawrence River (Fleuve Saint-Laurent) North Channel in Rural: Leeds and Grenville United Counties, Ontario, Canada
Metal Plate Girder Stiffening Wire Cable Suspension, Fixed
Length: 3,330 ft. Main Span: 750 ft. Main Spans: 3
Built 1938 By: Canadian Bridge Company of Walkerville, Ontario and Robinson and Steinman of New York, New York
Thousand Islands Bridge
International Rift Bridge
HSRNational HSR. Local HSR.

Rough Distance: 1 Miles (1.6 Kilometers)

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I-81 and KH-137 Over St. Lawrence River (Fleuve Saint-Laurent) (International Rift) in Rural: Leeds and Grenville United Counties, Ontario and Jefferson County, New York, Canada and United States
Concrete (Stone Faced) Rigid-Frame, Fixed
Length: 102 ft. Main Span: 96 ft. Roadway: 30 ft. Main Spans: 1
Built 1938 By: R. A. Blythe of Toronto, Ontario
!
Thousand Islands Bridge
South Channel (American) Bridge
HSRNational HSR. Local HSR.

Rough Distance: 3.8 Miles (6.1 Kilometers)

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I-81 Over St. Lawrence River (Fleuve Saint-Laurent) South Channel in Rural: Jefferson County, New York, United States
Metal Plate Girder Stiffening Wire Cable Suspension, Fixed and Approach Spans: Metal Deck Girder, Fixed
Length: 4,500 ft. Main Span: 800 ft. Roadway: 24 ft. Main Spans: 3
Built 1937 By: American Bridge Company of New York, New York and Robinson and Steinman of New York, New York
X
Landons Bay Bridges
HSRNational HSR. Local HSR.

Rough Distance: 5.4 Miles (8.6 Kilometers)

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1000 Islands Parkway (Old KH-2) Over Landons Bay in Rural: Leeds and Grenville United Counties, Ontario, Canada
Metal 6 Panel Rivet-Connected Polygonal Warren Pony Truss, Fixed
Main Span: 98 ft. Main Spans: 1
Built 1940 By: Unknown
Ledges Road Bridge
HSRNational HSR. Local HSR.

Rough Distance: 5.5 Miles (8.8 Kilometers)

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Ledges Road Over Mullet Creek in Rural: Jefferson County, New York, United States
Metal 4 Panel Welded Double-Intersection Warren Pony Truss, Fixed
Length: 70 ft. Main Span: 62 ft. Roadway: 21.7 ft. Main Spans: 1
Built By: Unknown

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.

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