 ODOT says that the capacity of each barge could be increased by 200 tons for each foot of draft.An article in 2010 stated that much of MKARNS is already deep, so that only about would need to be deepened.The article quoted Lt. Col. Gene Snyman, then deputy commander of the U.S. Army Corps of Engineers’ Tulsa District, as saying such a project would cost about $170 million (2010 dollars).