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Historic Bridges: I-75 / TC-17B

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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Total Bridges Found: 1

International Bridge
Sault Ste. Marie International Bridge
HSRNational HSR. Local HSR.
Click to visit page.
I-75 / TC-17B Over St. Marys River and Associated Canal System in Sault Ste. Marie: Chippewa County, Michigan and Algoma District, Ontario, Canada and United States
Metal Cantilever (Arch and Suspended Deck) Bolt-Connected Warren Through Truss, Fixed and Approach Spans: Metal 8 Panel Bolt-Connected Warren Deck Truss, Fixed
Length: 9,281 ft. Main Span: 430 ft. Roadway: 28 ft. Main Spans: 7
Built 1962 By: Bethlehem Steel Company of Bethlehem, Pennsylvania and Raff and Dexter of Lansing, Michigan 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.

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