Olmsted Olmsted Locks and Dam Ribbon Cutting Set for Thursday By Brad Palmer • Aug 29, 2018 U.S. Army Corps of Engineers The most expensive inland waterway project in U.S. history is set to open later this year. A ceremonial ribbon cutting at the Olmsted Locks and Dam in southern Illinois is scheduled for Thursday. Ribbon Cutting Scheduled for Olmsted Locks and Dam Project By Brad Palmer • Jun 11, 2018 A ceremonial ribbon cutting 30 years in the making is scheduled for late summer in southern Illinois. The ceremony at Olmsted Locks and Dam near the confluence of the Mississippi, Ohio, Tennessee and Cumberland Rivers will take place on August 29th. Critics Question Olmsted Project Cost By Illinois Radio Network • Sep 29, 2014 U.S. Army Corps of Engineers Illinois congressmen are criticizing the long-delayed Olmsted lock and dam project.