From the writers at RV Life Magazine.
Until the mid 1850s, if you were a boat or canoe headed down Michigan’s 63-mile long St. Marys River that connected Lake Superior to Lake Huron, you would need to portage around the St. Marys Rapids.
Unloading your cargo, carrying it around the natural waterfall to reload into a different boat on the other side (or carrying your canoe as well as cargo) took a lot of extra time, money and work.
That is until a lock was built to allow watercraft to easily navigate the 21-foot drop between the two lakes. Known today as the Soo Locks, a series of four locks allow 11,000 vessels a year— from small pleasure boats to enormous freighters carrying 72,000 tons of freight — to efficiently “lock through.”
To better understand the system and cost savings provided by this engineering marvel, stop at the Soo Locks Visitor Center between May and November in Michigan’s oldest city, Sault Ste. Marie.
To read the full story in RV Life Magazine, click here.