County Road 32B (Chiles Road) Rehabilitation Project

County Road 32B, also known as Chiles Road, is located along Interstate 80 between the city of Davis and the Yolo Bypass. It carries approximately 2,800 vehicles per day, and the average speed is approximately 50 miles per hour. The old pavement along County Road 32B was cracked and beginning to pothole. Most portions of the pavement exceeded their design life by at least 20 years, and were deteriorating at a rapidly increasing rate, with corresponding increases in the cost of road maintenance. This rehabilitation project has increased the strength of the pavement section and improved conditions for motorists by means of combining two innovative soil stabilization and structural section recycling in-place techniques (FDR with cement for the Phase 1 and lime treatment for Phase 2). The approach specifically tailored to the each road segment needs. Where the structural section was insufficient and the vertical clearance with the I-80 had to be maintained, Phase 2, lime treatment stabilization was employed to minimize construction costs. This resulted in 55% of cost savings in comparison with the road reconstruction costs. Phasing the work also in two stages also allowed to minimize the construction impacts and provide uninterrupted access to adjacent businesses and property owners. A portion of this project is eligible for $719,921 in federal funds as programmed in SACOG’s Metropolitan Transportation Improvement Plan. These funds were originally earmarked to build a new road to the Pacific Flyway Center. The money had been in danger of being swept back into federal coffers, so the Yolo Basin Foundation approved the use of earmarked funds to reconstruct County Road 32B. Staff from the County Administrator’s Office and Public Works worked with Congressman Thompson’s office, Caltrans, and SACOG to secure the necessary approvals to construct this vital project.