Every year, the Corps of Engineers uses the winter period to perform maintenance to keep the Soo Locks operating. This year, the Soo Locks will close to marine traffic beginning 11:59 p.m. Jan. 15 through 12:01 a.m. March 25. Read the full story by WLUC-TV – Negaunee, MI.
Great Lakes Commission
https://www.glc.org/dailynews/20220114-soo-locks