
The U.S. Army Corps of Engineers closed the 2020 navigation season on the Upper Mississippi River when the tow Colonel passed through Lock 2 at Hastings, Minnesota, on Nov. 30.
Winter maintenance at Lock and Dam 4 begins Dec. 7 and runs to March 14.
The 2020 season ran more smoothly than the flood-plagued 2019 season.
The seasonal closure removes Upper Mississippi barge capacity until spring, so Upper Midwest grain must move by rail or truck, which keeps barge freight costs firm over the winter.
Not enough comparable past events yet for a historical read.
After 1,054 past logistics events, Corn moved a median -0.1% over 5 sessions (48% higher; middle half -1.5% to +1.5%), and -0.0% over 20.
After 837 past logistics events, Soybeans moved a median +0.4% over 5 sessions (55% higher; middle half -1.5% to +2.0%), and +0.6% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.