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Michigan

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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

HB659424
BWPhotos 196483

HB659425
BWPhotos 196484

HB659426
BWPhotos 196485

HB659427
BWPhotos 196486

HB659428
BWPhotos 196487

HB659429
BWPhotos 196488

HB659430
BWPhotos 196489

HB659431
BWPhotos 196490

HB659432
BWPhotos 196491

HB659433
BWPhotos 196492

HB659434
BWPhotos 196493

HB659435
BWPhotos 196494

HB659436
BWPhotos 196495

HB659437
BWPhotos 196496

HB659438
BWPhotos 196497

HB659439
BWPhotos 196498

HB659440
BWPhotos 196499

HB659441
BWPhotos 196500

HB659442
BWPhotos 196501

HB659443
BWPhotos 196502

HB659444
BWPhotos 196503

HB659445
BWPhotos 196504

HB659446
BWPhotos 196505

HB659447
BWPhotos 196506

HB659448
BWPhotos 196507

HB659449
BWPhotos 196508

HB659450
BWPhotos 196509

HB659451
BWPhotos 196510

HB659452
BWPhotos 196511

HB659453
BWPhotos 196512

HB659454
BWPhotos 196513

HB659455
BWPhotos 196514


Item Title
BWPhotos 196514

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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