New Soo Lock Under Construction

Along the St. Mary’s River, the Soo Locks, often noted as the “Lynchpin of the Great Lakes”, have been the only route for freighters moving ore and raw material from mines on Lake Superior to the refineries of the Lower Great Lakes. A century has passed since the construction of the earliest Davis and Sabin Locks, which now sit empty and abandoned on the North Channel. The two active locks, the MacArthur and Poe Locks, were built in the 1930s and 1960s respectively