The Soo Locks opened for the 2016 season Friday.
The locks, which allow ships to move between Lakes Superior and Huron, close in the winter for repairs. This year's improvements included a new hydraulic system, anchorage repairs, and replacing the de-watering bulkhead coating for the Poe Lock, according to a press release from The Great Lakes Seaway Partnership.
Additionally, crews worked to modernize the MacArthur Lock's electrical system. MacArthur Lock closed for part of last summer because of unexpected repairs.