This project consisted of constructing the bridge approaches of a new alignment for US-82 across the Mississippi River. The Mississippi approach consisted of 458 drilled shafts, ranging in diameter from 1200mm to 1650mm, and depths from 22.50 meters to 38.75 meters. The Arkansas approach consisted of 266 1200mm shafts, ranging in depth from 25.75 meters to 38.30 meters. Using temporary and permanent casings and the slurry displaced method, A. H. Beck completed both projects in under 23 months. Each bridge column was cast on a footing supported by a cluster of drilled shafts. A sequence was developed and implemented by A. H. Beck to install and extract temporary casing on multiple drilled shafts without imparting vibrations to the concrete that was curing in the shafts within the same cluster.
OWNER: Mississippi Department of Transportation
HIGHWAY: US-82, Greenville, MS