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Contractors working for the U.S. Army Corps of Engineers Pittsburgh District install a 23-foot-tall concrete shaft enclosure weighing approximately 120,000 pounds as part of the guard wall at the Monongahela River Locks and Dam 4 in Charleroi, Pennsylvania, Nov. 16, 2023.

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  • October

    Ty Melton, a lock mechanic with the U.S. Army Corps of Engineers Nashville District, dons diving headgear with the help of Matt Williamson, a fellow mechanic at Wilson Lock in Florence, Ala., Oct. 9, 2024. Dive-certified mechanics like Melton and Williamson are crucial to getting a firsthand look at any underwater maintenance concerns, such as the cracks in the land and river sides of the gates at Wilson that have caused the closure of the main chamber.

    Divers and remote technology assist with maintenance at Wilson Lock

    The U.S. Army Corps of Engineers Nashville District is taking steps to address critical maintenance concerns at Wilson Lock on the Tennessee River, where divers and remotely-operated technology are working together to inspect the main chamber gates. On Oct. 9, 2024, a dive support team, assisted by specialists from the USACE Engineer Research and Development Center, conducted a detailed inspection following the discovery of cracks on both the land and river side gates, which prompted the closure of the main chamber.

  • September

    A welder repairs a piece of metal.

    From wear-and-tear to substantial repair: Pittsburgh District extends life of Hannibal Locks and Dam

    Against the backdrop of the Ohio River’s steady flow and the hum of heavy machinery, the U.S. Army Corps of Engineers Pittsburgh District continues extensive work rehabilitating the primary lock chamber at Hannibal Locks and Dam in Hannibal, Ohio.

  • July

    A welder from the U.S. Army Corps of Engineers Regional Rivers Repair Fleet welds one of the more than 40 cracks identified in the Old Hickory Lock chamber gates in Hendersonville, Tennessee, July 19, 2024. The water from the lock chamber is pumped out and repairs are made over the course of three weeks to ensure continued operability of the nearly 70-year-old lock. (USACE Photo by Braden Simmons)

    Maintenance professionals drain Old Hickory Lock for inspection, repairs

    OLD HICKORY, Tenn. (July 30, 2024) – Maintenance professionals with the U.S. Army Corps of Engineers Nashville District recently closed Old Hickory Lock to navigation and drained it to check on the condition of components that operate under the surface of the water.

  • March

    Surveyors use advanced scanning equipment to collect thousands of measurements and datapoints to produce digital images with accuracy down to the millimeter.

    Headwaters Highlights: Surveyors measure a thousand times, take no shortcuts

    In the world of carpentry and construction, a famous proverb cautions laborers to "measure twice, cut once," but in the field of survey work, measuring twice is not enough.

  • July

    Annual Maintenance Bulkhead Exercise

    Annual Maintenance Bulkhead Exercise

    While conducting the annual maintenance bulkhead exercise, access across Sutton Dam to the Jerimiah Carpenter hiking trail was closed. This important exercise enables staff the opportunity to maintain a state of readiness and to test the various pieces of equipment and steps required to complete the process.

  • May

    Zach Dixson, park contractor representative with the U.S. Army Corps of Engineers Nashville District at J. Percy Priest Lake, clears branches May 1, 2023, from near a park entrance at Poole Knobs Campground in La Vergne, Tennessee. (USACE Photo by Lee Roberts)

    Percy Priest superheroes tool around for recreation

    NASHVILLE, Tenn. (May 5, 2023) – A team of superheroes at J. Percy Priest Lake are known for tooling around campgrounds and recreation areas while repairing and maintaining facilities, often saving the day by unclogging a restroom sink, fixing a leaky water line, or restoring power at a campsite.
  • Zach Dixson, park contractor representative with the U.S. Army Corps of Engineers Nashville District at J. Percy Priest Lake, clears branches May 1, 2023, from near a park entrance at Poole Knobs Campground in La Vergne, Tennessee. (USACE Photo by Lee Roberts)

    Percy Priest superheroes tool around for recreation

    NASHVILLE, Tenn. (May 5, 2023) – A team of superheroes at J. Percy Priest Lake are known for tooling around campgrounds and recreation areas while repairing and maintaining facilities, often saving the day by unclogging a restroom sink, fixing a leaky water line, or restoring power at a campsite.

  • August

    Crewmembers with the U.S. Army Corps of Engineers Medium Capacity Fleet perform repairs at the New Cumberland Locks and Dam on the Ohio River in Moraine, Ohio.

    Gate keepers: Installing new miter gates at New Cumberland requires planning, time, extra measures

    Crewmembers with the U.S. Army Corps of Engineers Medium Capacity Fleet performs repairs at the New Cumberland Locks and Dam on the Ohio River in Moraine, Ohio.

  • July

    Nashville District engineers, with the help of Huntington District engineers, use a crane to lower the 63,000-pound stop log into the water so divers can check the placement and ensure j-seals are working properly at Cheatham Lock in Ashland City, TN.

    Cheatham Lock undergoes stop log seal maintenance

    ASHLAND CITY, Tenn. (July 29, 2022)— Nashville District engineers reset upper approach stop logs on Cheatham Lock in Ashland City, TN. Engineers from the USACE Huntington District Light Capacity Fleet assisted with the maintenance work completed July 25.

  • February

    N/a

    Same old locks, new maintenance solutions each year

    A maintenance workshop that began 40 years ago has grown from a small gathering of 12 people to an international event.
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