The kcICON project in Kansas City, Mo., is a $245 million project to improve and upgrade about four miles of the I-29/35 corridor through Kansas City. The project features a landmark cable-stay Missouri River bridge, and will upgrade the Interstate to six lanes (expandable to eight lanes). Construction began in Spring 2008. Full service to all lanes will be restored by June 1, 2011, with final construction completed by July 31, 2011.
The cable-stayed bridge is approximately 1,700 feet long, with the two cable-stayed spans supported by a single pylon. The main channel span is 550 feet, and the back span is about 450 feet. Approach spans vary in length from 110 feet to 165 feet.
Dan Brown and Associates, Sequatchie, Tenn., performed geotechnical engineering and design of the drilled shaft foundations for the bridge piers. Other services included:
- Quality assurance review of the geotechnical reports for the remaining geotechnical work on the project corridor, including bridges, retaining walls and slopes.
- Developing and analyzing the drilled shaft load test plan.
- Geotechnical engineering consulting during trial shaft installation and production shaft construction.
Eight drilled shafts, installed by Massman Construction Co., Kansas City, Mo., support the main pylon with rock sockets 10.5 feet in diameter. The land-based bents are supported with drilled shafts bearing on rock ranging in diameter from 6.5 feet to 8 feet in diameter. Tip grouting was utilized to enhance the bearing resistance of the shafts at Bent 5 on the north side of the river. Steel H-piles were used to support the end bents (abutments).