Upstream approach wall contract reaches major milestone at Chickamauga Lock

Contractors take precise measurements to ensure a 420-ton concrete beam aligns perfectly as it lowers into position for the Chickamauga Lock Replacement Project's upstream approach wall Tuesday, June 16, 2026, on the Tennessee River. Every lift requires meticulous coordination to safely place the massive beams, representing a critical step in the U.S. Army Corps of Engineers' ongoing mission to deliver modern, reliable inland navigation infrastructure for the nation. USACE Photo by Noe Gonzalez)