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The Jerry F. Costello Lock was closed August 19 after silt and debris blocked its downstream miter gates from closing.
Contracted divers removed obstructions, but the gate problem persisted, and dredging crews were scheduled to excavate silt on August 23.
The lock outage constrains barge traffic on the Kaskaskia and nearby Mississippi routes, which can tighten barge capacity and firm freight costs for grain shippers.
Not enough comparable past events yet for a historical read.
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.