Kerr Dam Spillway Stabilization

The Kerr Dam Spillway Stabilization Project included one pre-production post-tensioned rock anchor on the top of the dam, 48 production post-tensioned anchors across the downstream face of the spillway, and a temporary platform for access to the spillway locations. The high-capacity tendons consist of between 36- and 57 strands each. The access platform spanned the entire 824-foot-wide gated spillway with fabricated members provided by Advantage Steel, represents a crucial planning element to meet the aggressive schedule needs established for the Project.

In addition to the challenges of working on the Neosho River, the general site vicinity exhibits an unusual subsurface condition. The shallow rock formation beneath the dam contains perched natural gas under slight pressure. Although passively vented at locations across the local area, crew exposure risk is controlled through detection monitoring and a specialty cuttings-handling system planned for the Project.

‍

‍