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Soo Locks
300 W Portage Ave
Sault Ste. Marie, MI 49783
Phone: 906-632-3311
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Dates: Tuesday, May 1 through Monday, October 15

The first Soo Lock was built in 1855 by the state of Michigan. The locks provide a way around the rapids at St. Mary's Falls. The locks have been operated by the U.S. Army Corps of Engineers since 1881. A hydroelectric power plant is at the north end of the locks. Private boat tours are available at Sault Ste. Marie. The visitors center has observation platforms with closed-circuit television monitors announcing the coming and going of the Great Lakes freighters. The lock system is visible from the platforms.

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