GRAND RIVERS, Ky. (Aug. 1, 2018) – The U.S. Army Corps of Engineers Nashville District plans to set its first 1.3-million-pound concrete shell Friday, Aug. 3, 2018 that will form a part of the downstream cofferdam for the new lock under construction at Kentucky Dam, a Tennessee Valley Authority project. Lifting and setting this massive concrete shell represents a critical milestone towards completion of the new 1,200-foot-long navigation lock and involves techniques never previously attempted.