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Tag: Chickamauga Lock Replacement Project
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  • September

    SPRING CITY, Tenn. — Barnhart crew members use a hydraulic power system to lift a prefabricated wall beam onto a barge for delivery to the Chickamauga Lock Replacement Project’s upstream approach wall contract near Watts Bar Dam Aug. 28, 2025. (USACE photo by Noe Gonzalez)

    Massive Wall Beams make their move to Chickamauga Lock

    After over a decade in storage, massive 120-foot-long concrete wall beams are being transported by barge from Watts Bar Dam to the Chickamauga Lock Replacement Project site, marking a key milestone in improving navigation infrastructure on the Tennessee River. These beams, originally fabricated in 2013, are crucial to completing the upstream approach wall, which is now 68% finished. The transport involves careful coordination using hydraulic systems and rotating barges over several weeks, with beam installation underway. Once complete, the new lock will significantly increase efficiency for commercial navigation, processing nine jumbo barges per lockage compared to just one currently.
  • C.J. Mahan work crews place 148 cubic yards of tremie concrete Sept. 20, 2023, from a pump truck into a tremie pipe for placement into the shaft on the bottom of the Tennessee River for the first of 14 shafts for the upstream approach wall piers. The U.S. Army Corps of Engineers Nashville District Upstream Approach Wall construction is an integral part of the Chickamauga Lock Replacement Project in Chattanooga, Tennessee. (USACE Photo by Matthew Curvin)

    Chickamauga’s upstream approach wall piers get solid start

    CHATTANOOGA, Tenn. (Sept. 27, 2023) – The Upstream Approach Walls for the Chickamauga Lock Replacement Project got a solid start when work crews placed 148 cubic yards of tremie concrete Sept. 20 into the drilled shaft on the bottom of the Tennessee River.

  • June

    Michael Wilkinson, safety specialist at the Chickamauga Lock Replacement Project on the Tennessee River in Chattanooga, Tennessee, is the U.S. Army Corps of Engineers Nashville District Employee of the Month for March 2023. He is seen here June 2, 2023, inside a new lock chamber under construction. (USACE Photo by Amanda O’Neill)

    Wilkinson lauded as safety champion at Chickamauga Lock Replacement Project

    CHATTANOOGA, Tenn. (June 2, 2023) – Michael Wilkinson is a safety specialist and quiet professional focused on teaching and ensuring the contractor makes things safe for about 500 construction workers at the Chickamauga Lock Replacement Project.

  • May

    Shimmick Crane Operator Patrick Harrison lifted the last concrete form from monolith L13 to mark the official completion of the first of 36 monoliths. The U.S. Army Corps of Engineers Nashville District and its contractor, Shimmick, held a topping-off ceremony May 22, 2023, at the Chickamauga Lock Replacement Project on the Tennessee River in Chattanooga, Tennessee. (USACE Photo by Lee Roberts)

    Chickamauga Lock Replacement Project reaches monolithic milestone

    CHATTANOOGA, Tenn. (May 23, 2023) – Construction of a new navigation lock on the Tennessee River reached a monolithic milestone yesterday as crews and officials held a topping-off ceremony to mark the completion of the first concrete monolith.

  • March

    Lt. Col. Joseph Sahl, U.S. Army Corps of Engineers Nashville District commander, leads a group of stakeholders on a tour of Kentucky Lock and the Kentucky Lock Addition Project March 22, 2023, on the Tennessee River in Grand Rivers, Kentucky. He is having a conversation with Cmdr. Jennifer Andrew, commander of U.S. Coast Guard Marine Safety Unit Paducah, as the group walked on the coffer dam and future downstream approach wall during the tour. A vessel and barges approach the downstream active lock on the left of the photo and construction of the new lock chamber can be seen on the right of the photo. (USACE Photo by Lee Roberts)

    Roundtables serve stakeholders mega project update

    NASHVILLE, Tenn. (March 24, 2023) – Nashville District leaders, engineers and project managers hosted stakeholder roundtables this week to provide updates and an opportunity to visit the district’s two mega construction projects.

  • June

    Justin Tabor, senior cost engineer for Chickamauga and Kentucky Lock, is the Nashville District’s Employee of the Month for April 2022. (USACE Photo by HEATHER KING.)

    Nashville District names Tabor Employee of the Month for April 2022

    Justin Tabor, senior cost engineer assigned to the Technical Services Section, is named U.S. Army Corps of Engineers Nashville District Employee of the Month for April 2022. He is recognized primarily for his efforts as a senior cost engineer supporting the Kentucky Lock Total Project Cost Update.