The farthest-inland deep water port on the Mississippi River is located 80 miles upstream, at which city?

The Port of Greater Baton Rouge holds a unique geographical distinction on North America's mightiest river. Located approximately 234 river miles from the Gulf of Mexico, it is the farthest point upstream that large, ocean-going vessels can safely navigate. The U.S. Army Corps of Engineers maintains a deep-draft shipping channel, typically at a depth of 45 feet, all the way from the Gulf to the city's port facilities. This allows massive ships carrying goods like grain, petroleum, and chemicals to travel deep into the American interior.

Just north of the city, the Mississippi River's maintained channel becomes significantly shallower. This natural change makes the river impassable for the same deep-draft ships that serve global markets. Consequently, Baton Rouge functions as a critical intermodal hub where international and domestic shipping meet. Cargo is transferred from massive ocean freighters onto the extensive network (Review) of barges that serve the upper Mississippi and its tributaries, like the Ohio and Missouri Rivers, connecting the American heartland to the rest of the world.