Chickamauga Lock Replacement Project
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Chickamauga Lock is located at Tennessee River mile 471, 6.9 miles above Chattanooga, Tenn. Chickamauga Lock is located at Tennessee River mile 471 only 6.9 miles above Chattanooga, Tennessee. It is 58.9 river miles downstream of Watts Bar Lock and 46.3 miles upriver from Nickajack Lock. Located at a Tennessee Valley Authority project, it is operated and maintained by the U.S. Commercial and recreational vessels move up and down the river past Chickamauga Dam using the lock.
What does an 800% increase in efficiency look like? It looks like the new Chickamauga Lock.
🚢🏗️ The U.S. Army Corps of Engineers Nashville District was honored to host Congressman Chuck Fleischmann, Tennessee District 3, and Assistant Secretary of the Army (Civil Works) Adam Telle at the project site March 12, 2026. From the top of the new lock walls to the existing navigation chamber, these leaders saw firsthand the world-class engineering required to keep our inland waterways flowing.
Check out this video for their perspective on why the Chickamauga Lock Replacement Project is a "must-win" for regional economic vitality and national infrastructure resilience.
Key Highlights:
• Efficiency Surge: The new lock will accommodate nine jumbo barges in a single lockage—an 800% increase in efficiency.
• Economic Vitality: By clearing this historic choke point, we are ensuring the flow of commodities to 318 miles of the upper Tennessee River.
• Engineering Excellence: This project showcases the U.S. Army’s world-class engineering and its commitment to delivering critical national infrastructure.
02/13/2026
Big news for Chattanooga!
The final contract for the Chickamauga Lock Replacement Project has been awarded to C.J. Mahan Construction Company LLC ($192.1M).
The Goal: Transitioning navigation to a newer, larger lock that is 80% more efficient for the industry.
âś… 9 jumbo barges per lockage (vs. 1 today) âś… Access to 318 miles of navigable waterways âś… Final phase of construction is officially underway!
USACE awards Chickamauga Lock Replacement Project’s final contract NASHVILLE, Tenn. (Feb. 13, 2026) – The U.S. Army Corps of Engineers Nashville District announces the award of the Approach Wall and Decommissioning Cont...
07/22/2025
Tennessee 600 lead by TWRA patrol. Going all the way to Kentucky lock over the next few days.
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5532 Trailhead Drive
Chattanooga, TN
37415
