GRAND RIVERS, Ky. (Jan. 26, 2015) – The U.S. Army Corps of Engineers Nashville District invites the media to visit the Kentucky Lock Addition Project 1 p.m. Wednesday, Jan. 28, 2015 to see the first completed massive concrete monolith, which crews topped off this past week. This is a significant milestone in the construction of the new navigation lock, and an unveiling is planned to commemorate the occasion.