Upstream approach wall contract reaches major milestone at Chickamauga Lock

A 420-ton concrete beam is hoisted into position over the Tennessee River during construction of the upstream approach wall for the Chickamauga Lock Replacement Project, June 16, 2026, in Chattanooga, Tenn. The successful placement of these massive beams, guided by contractors on the pier below, marks a significant milestone in the U.S. Army Corps of Engineers' mission to modernize the nation's inland waterways and deliver critical navigation infrastructure. (USACE Photo by Noe Gonzalez)