The Stewart J. Cort passed under the Aerial Lift Bridge first, followed a few hours later by the Mackinaw, Sam Laud and Algoma Discovery, according to the site boatnerd.com. The convoy left Whitefish Bay last week.
U.S. and Canadian coast guard ships will be escorting convoys until the icy shipping lanes are safer.
From Wabasha to Warroad, from Sleepy Eye to Silver Bay, Dateline Minnesota scours the state to bring you breaking news from outside the Twin Cities.
Patients with certain serious illnesses and conditions will be able to buy medical marijuana, starting July 1. As of Friday, Minnesota had enrolled 41 patients, and 176 doctors and other medical professionals have registered to certify more.