Lost Hills

This project consists of a 10-mile shoulder widening and complete reconstruction of lane 2 north and south bound on Interstate 5 between Lerdo Avenue and Los Hills. The project will utilize 190,000 tons of HMA and 64,000 cubic yards of continuous reinforced concrete. The project will upgrade this portion of highway to a new 40 year pavement design.

G3 Quality partnered with the Joint Venture to develop the materials designs and collaborated on project phasing to expedite the construction schedule. Utilizing a fully Caltrans certified Superpave HMA Mobile laboratory at the plant, the contractors risk was mitigated by providing materials quality data during the shifts production. As the work progressed, the G3 Quality team informed the contractor of materials results throughout the day in real time and provided Caltrans the Quality Reports at the end of each shift.

Services Performed

  • CRCP Quality Control Inspection and Testing
  • HMA Quality Control Inspection and Testing
  • Materials Designs for PCC and HMA
  • Onsite Mobile Laboratory Testing
  • Quality Program Management
  • Rapid Set Concrete Inspection and Testing

Project Details

Caltrans Contract 06-0P1404 Route 5 Lost Hills

Contract Number:


Highway Construction

Griffith/Coffman Joint Venture

Caltrans District 6

Kern County

March 2015 - ongoing (estimated completion summer 2017)


Let us provide quality support and expertise for your next project.