On August 31, 2021, the Wilson Lock floating wall, which guided boats into the primary lock, lost buoyancy, detached, and sank to the bottom of the reservoir. TVA’s interim guard wall solution was to install an interlocking system of three ocean barges and equipment.
Interim guard wall in place. TVA photo
The installation of the Wilson Lock interim guard wall is now complete, and the U.S. Army Corps of Engineers has reopened the main lock.
The 140,000-pound spuds were lowered into the Tennessee River at an average depth of about 12 feet. A total of 10 spuds were installed to keep the barges in place.
A 140,000-pound spud. being lowered in place. TVA photo
The interim guard wall will support navigation traffic through Wilson Lock’s main chamber. Each barge is 195 feet long, making the overall length of the temporary guard wall 585 feet long. This interim solution is designed to last between five and 10 years.
The TVA Civil Engineering and Construction teams worked on the installation process.
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