We are certainly at our limit for what exists right now. As mentioned, there is lots of room for more ships. The newer lake ships are at maximum size—length, width and depth—for the system that exists. An improvement and expansion in the system in the future is definitely worth looking into. It would provide much greater ability to move more cargo and keep it off the roads and do it more efficiently.
On September 24th, 2018. See this statement in context.