SAULT STE. MARIE — The Soo Locks’ MacArthur Lock will close for the Navigation Season on Dec. 16 for seasonal repairs and maintenance. The Poe Lock will remain open until Jan. 15, 2025, or until ...
The New Lock at the Soo project is being built in 3 phases. Phase 1 (Upstream Channel Deepening) was completed in 2022, and Phase 2 (Upstream Approach Walls) is nearing completion this summer.