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Sault Ste. Marie

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Sault Ste. Marie International Railroad Bridge, Spanning Soo Locks at St. Marys Falls Canal, Sault Ste. Marie, Chippewa County, MI



B&W Photos

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Item Title
Sault Ste. Marie International Railroad Bridge, Spanning Soo Locks at St. Marys Falls Canal, Sault Ste. Marie, Chippewa County, MI

Location
Spanning Soo Locks at St. Marys Falls Canal, Sault Ste. Marie, MI

Find maps of Sault Ste. Marie, MI


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER MI-324
Building/structure dates: 1887 initial construction
Building/structure dates: 1913 subsequent work
Building/structure dates: 1959 subsequent work
Significance: The Sault Ste. Marie International Railroad Bridge has nine camelback truss spans crossing the St. Marys River with bascule and vertical lift bridge components crossing the American Locks at the St. Marys Falls Canal. It is the only bridge in the United States known to include these three types of spans in a single structure to use an interlocking mechanism to connect the leaves of the double-leaf bascule span. It is Michigan's most significant railroad bridge from an engineering history standpoint and is eligible for listing in the National Register of Historic Places.

Subjects
Railroad Bridges
Truss Bridges
Bascule Bridges


Related Names
Canadian National Railroad
Fairbanks Scale Company
U.S. Army Corps Of Engineers
Starbuck, Kimberly, Photographer
Pritchard, James C., Field Team
Sweeten, Lena, Historian


Collection
Historic American Engineering Record (Library of Congress)

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