Posted inGraphic of the Week

GRAPHIC: A 40-year look at the busiest canal on the Mississippi River

Millions of tons of corn, wheat and soybeans travel down the Mississippi River each year to be shipped all over the world from New Orleans.

As of April 17, 641,000 tons of grain passed through Lock 27, a canal that runs more than two-dozen miles long and is located just outside of St. Louis in Granite City, Illinois.