Improving Road Safety

The County is improving Wimer Road by enhancing safety and increasing sight distance and capacity. The project is located in eastern San Joaquin County, 1.2 miles south of State Route 26. The project demolished an existing bridge, constructed a new 2-lane concrete bridge structure, and realigned the roadway approach to the bridge to soften the northerly curve, improving traffic safety. The new 2-lane concrete structure consists of two abutments and spans 62 feet. The replacement bridge is a single-span cast-in-place post-tensioned concrete slab supported on seat-type abutments with pile foundations. Each abutment has a total of eight, 30-inch diameter cast-in-drilled-hole piles. The cast-in-place slab uses polymer fiber to improve durability and was pre-stressed. The new bridge replaced the small radius curve on the previous bridge with a larger radius curve meeting current standards, with a maximum offset of approximately 35-feet.

Full Range of Support

Ghirardelli provided Construction Management services that included resident engineering, inspection, materials testing, public outreach, and construction survey quality assurance. Our team developed a construction management plan, and provided contract administration during construction, including project records services, documenting pre-construction conditions, meetings, schedule reviews, cost control, submittals, and clarifications. We also provided contract modifications/change orders/claims as needed. After construction, our team verified project completion and acceptance, project closeout, facilitated an exclusionary device hand-off meeting, and performed miscellaneous inspections and construction administration activities.