SAULT STE. MARIE, Mich. (March 5, 2021) - U.S. Army Corps of Engineers (USACE) officials will use dry blasting during New Lock at the Soo construction to avoid or drastically minimize impacts to fish larvae and adult fish spawning near the Soo Locks.
The Soo Locks on the St. Marys River allow vessels to navigate the 21 ft elevation change between Lake Superior and the lower Great Lakes. A new Poe-sized lock being built will provide necessary redundancy in the Great Lakes Navigation System’s critical infrastructure.
To build the New Lock, deepening the channel on the upstream side (west) of the Poe lock is necessary. Dredging is scheduled to occur in 2021-2022. Drilling and blasting are required to fragment the bedrock and concrete for dredging.