Shimmick Construction Company workers transfer a miter gate component at Chickamauga Lock near Chattanooga, Tennessee, Dec. 6, 2024. A total of 14 miter gate components are being delivered to the site each day from Dec.5-23, 2024. The Chickamauga Lock replacement project, managed by the U.S. Army Corps of Engineers Nashville District, includes designing a new 110-foot by 600-foot navigation lock to replace the current lock, which is necessary due to alkali-aggregate reaction, a chemical process that causes concrete to expand and crack, threatening the structural integrity of the lock.

Engineering solutions for our Nation’s toughest challenges

Graphic of a certificate Wetlands / Water Permits
Wetlands / Water Permits
See More
Graphic of a canoe with oars laying across the top. Find a recreation site
Find a recreation site
See More
Graphic of people around desk looking at documents. Do business with us
Do business with us
See More

Great Lakes Districts

Ohio River Districts

Chick Lock

Through deeds, not words, we are BUILDING STRONG®