Contractors working for the U.S. Army Corps of Engineers Pittsburgh District install a 23-foot-tall concrete shaft enclosure weighing approximately 120,000 pounds as part of the guard wall at the Monongahela River Locks and Dam 4 in Charleroi, Pennsylvania, Nov. 16, 2023.

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Author: Carrie Fox
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  • October

    New Lock at the Soo: Unlocking the Great Lakes

    SAULT STE. MARIE, Mich., – The U.S. Army Corps of Engineers, Detroit District works on unlocking the Great Lakes by providing a much-needed resiliency at the Soo Locks with the construction of the New Lock at the Soo. The New Lock at the Soo will be the same dimensions as the Poe Lock, 1,200 feet long, 110 feet wide and 30 feet deep. Often called the “linchpin” of the Great Lakes navigation system, the Soo Locks are located in Sault Ste. Marie, Michigan between the upper Peninsula of Michigan and the Canadian province of Ontario. The Soo Locks enable bulk carrier vessels to safely bypass the swift-moving St. Marys River rapids where the water drops 21 feet over bedrock in a three-quarter mile stretch. The St. Marys River is the only connecting waterway between Lakes Superior and the lower Great Lakes. Before the first lock was constructed in 1798, trade canoes had to be unloaded and portaged around the rapids, taking roughly six weeks to complete. Today, the locks operate 24 hours a day, seven days a week, 42 weeks of the year allowing government, commercial and private vessels to transit safely and more efficiently.
Chick Lock

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