I-5 Pavement Rehab – Castaic to Palomas Wash Bridge


California Department of Transportation

Completion Date



California Department of Transportation


Santa Clarita, California

Delivery Method

General Contractor



Contract Value

$127 million
I-5 Pavement Rehabilitation

I-5 Pavement Rehabilitation Castaic to Palomas Wash Bridge encompasses the removal and replacement of the existing pavement from the I-5/SR 14 Interchange, extending northward for a distance of 15.8 miles. The southern segment, which spans the initial 4 miles from the I-5/SR 14 Interchange, involves working behind temporary barriers to complete stages one through four. Following the staged construction, the lane pavement and panel replacements are carried out during night and weekend closures. The northern segment, covering the remaining 12 miles, also involves lane pavement and panel replacement, executed during numerous night and weekend closures.

The project entails 350,000 cubic yards of roadway and concrete excavation, 60,000 cubic yards of Class 3 Aggregate Base, 60,000 cubic yards of lean concrete/rapid set lean concrete base, 13,500 tons of asphalt paving, 55,000 cubic yards of concrete paving, 164,000 cubic yards of rapid set concrete paving, 2,800 precast concrete panels, and extensive pavement markings.

One of the primary challenges faced by the project team involves the removal of existing pavement during nightly closures and the subsequent replacement with new concrete pavement before reopening to live traffic the following morning. To address this challenge effectively, the team is leveraging volumetric concrete batch trucks. These specialized trucks can produce concrete that achieves opening-age concrete strengths within a mere two hours of placement, facilitating the project's demanding timetable.