LONG-LIFE REHABILITATION DESIGN AND CONSTRUCTION: I-710 FREEWAY, LONG BEACH, CALIFORNIA

This paper briefly describes the methodologies used for the mix and structural pavement section designs for the rehabilitation of the Interstate 710 (I-710) freeway adjacent to the Port of Long Beach, California, which include asphalt concrete (AC) replacement structures in the vicinity of three overcrossings and AC overlays on the broken and seated existing portland cement concrete pavement sections. Both structural pavement sections have been designed to accommodate estimated traffic of 200 million equivalent single-axle loads. Critical to the successful performance of these pavement structures in this heavily trafficked section of the I-710 are the construction quality control and quality assurance and mix design requirements. Important aspects of the construction requirements are also discussed, which include strict controls on the aggregate and binder contents as well as the compaction of the mixes utilized in the pavement sections. Staging of construction including considerations relating to construction management to meet the 55-h weekend closures planned for the freeway are also described. Finally, the paper emphasizes the importance of the partnered effort between the California Department of Transportation, the Asphalt Industry in California, and the University of California at Berkeley, in developing the requisite design and construction requirements for this project.