22 Apr 2025

Severe storms impact repair timeline at Wilson Lock

The Wilson Lock gate repair project has experienced a schedule shift due to a combination of weather delays, technical challenges, and the sequencing of critical path tasks. These factors have resulted in a delay of three weeks, extending the project's completion date from mid-June to early July 2025.

21 Apr 2025

Chickamauga Lock approach wall receives second nose pier delivery

Progress continues on the Chickamauga Lock Replacement Project as the U.S. Army Corps of Engineers Nashville District successfully delivered a second massive nose pier, a key structure that guides vessels into the new lock chamber. The milestone keeps the project on track for contract completion in 2026 and full operation by 2028, with the new lock expected to boost capacity by 80% and improve commercial navigation efficiency on the Tennessee River.

18 Apr 2025

Miter gate installation begins at Chickamauga Lock

CHATTANOOGA, Tenn. (April 18, 2025) – The U.S. Army Corps of Engineers Nashville District, in partnership with Shimmick Construction and Tennessee Valley Authority, recently began erecting massive miter gates for the Chickamauga Lock Replacement Project. This milestone brings the project closer to its goal of enabling both recreational vessels and commercial barges to pass through the new lock chamber, a critical step in modernizing regional infrastructure.

6 Apr 2025

Ohio River flooding disrupts locking operations at Markland and McAlpine

Locking operations at Markland Locks and Dam (Ohio River Mile 531.5) have been suspended due to high water. At McAlpine Locks and Dam (Ohio River Mile 606.8), the south (landside) chamber has ceased operations, and the north chamber is expected to close by the evening of Sunday, April 6, 2025. Additional impacts are expected downstream as river levels rise. A full summary of projected impacts at the district’s seven locks and dams on the Ohio River are listed below.

5 Feb 2025

USACE to host Site Visit for final contract of Chickamauga Lock Replacement Project

The U.S. Army Corps of Engineers Nashville District is hosting a Pre-Proposal Meeting and Site Visit on February 20, 2025, at 10:00 AM EST at Chickamauga Lock in Chattanooga, Tennessee, for the final construction contract of the Chickamauga Lock Replacement Project. This event will allow potential prime and subcontractors to tour the project site, understand the scope of work, and explore opportunities for small business participation in areas such as electrical work, welding, and material movement. The final contract includes completing the new lock, removing the cofferdam, decommissioning the existing lock, and restoring the surrounding site—significantly improving navigation efficiency on the Tennessee River.

13 Jan 2025

Wilson Lock reopening now planned for June 2025

The U.S. Army Corps of Engineers Nashville District has revised the timeline for completion of repairs to the main chamber of Wilson Lock near Florence, with reopening of the lock now estimated in June 2025.

9 Dec 2024

Chickamauga Lock replacement project reaches milestone with delivery of miter gates

The U.S. Army Corps of Engineers Nashville District, in partnership with Shimmick Construction and the Tennessee Valley Authority, is advancing the Chickamauga Lock replacement project with the delivery of 14 miter gate components from Dec. 5-23. These gates, designed to improve efficiency and reliability, mark a critical milestone in the construction of the new 110-foot by 600-foot navigation lock. Once completed, the new lock will significantly enhance capacity, accommodating up to nine jumbo barges at a time, boosting efficiency by 80% for commercial vessels on the Tennessee River.

26 Sep 2024

Wilson Lock main chamber closed until further notice

The U.S. Army Corps of Engineers Nashville District and the Tennessee Valley Authority have closed the main lock chamber at Wilson Lock on the Tennessee River near Florence, Alabama to conduct additional inspections and possible repairs on the lock chamber. The lock chamber will be closed until further notice.

21 Aug 2024

Corps to host renaming, dedication ceremony for John P. Murtha Locks and Dam

The U.S. Army Corps of Engineers Pittsburgh District will host a ribbon-cutting and renaming ceremony for Locks and Dam 4 on the Monongahela River near Charleroi, Pennsylvania, Aug. 28.

20 Aug 2024

USACE provides Chickamauga Lock replacement update to Congressional and Senate delegation

CHATTANOOGA, Tenn. — The U.S. Army Corps of Engineers Nashville District hosted U.S. Representative Chuck Fleischmann (TN-3), Chairman of the House Energy and Water Development and Related Agencies Subcommittee; U.S. Senator Marsha Blackburn; and delegations from other senate and congressional staff at the Chickamauga Lock Replacement Project on Aug. 20, 2024, to receive an update on project delivery and the importance of the lock replacement to the region’s economy.