Public Notices

Navigation Notice 20-34: Change in operations at Kentucky Lock

U.S. Army Corps of Engineers Nashville District
Published Sept. 8, 2020

On or about Sept. 11, 2020, the concrete-filled guard cell in Kentucky Lock’s lower approach will be placed into operation. As a result, the lock will revert to normal sequence of lockage operations; thus, cancelling the night time lockage restrictions for upbound vessels described in NTNI LRN 20-11.

A dedicated single helper boat will continue to be positioned in the lock’s lower approach 24/7 to protect ongoing vulnerable construction activities throughout the remainder of these activities, expected to last into this fall. For upbound vessels, the helper boat may come along side and push vessels riverward away from construction floating plant. If no floating plant is vulnerable, the passing tow may use the guard cell to pivot off of or rub against. To facilitate this, the guard cell has 10-inch wide steel banding spaced at 20-inch centers in possible impact areas. The helper boat will be available to pull downbound, unpowered cuts out of the lock chamber.

Tows should reduce power as much as possible when transiting the two vulnerable sheet pile cells. This is because prop wash could damage the sheetpile cells until they are completed. So in addition to reducing power, special care should be taken to minimize prop wash directed toward these cells during steerage. When downbound tows exit the chamber, the helper boat will be available to position itself faced-up on the head of the tow if the tow pilot feels it will be helpful in transiting this reach with power restrictions.

Kentucky Lock is located at Tennessee River mile 22.4 in Grand Rivers, Tennessee. For more information, call Wayne Chapman at 270-362-4226 or e-mail jeffrey.w.chapman@usace.army.mil