LESSONS LEARNED FROM IMPLEMENTING RESEARCH FOR LONG-LIFE PAVEMENTS ON INTERSTATE 710 IN SOUTHERN CALIFORNIA

The rehabilitation of I-710 in California was implemented as a long-life pavement to carry 200x10 6 ESALs for 30 years. New technologies were used for the mix and structural design. A crack, seat and asphalt concrete overlay was used on most of the section, with full-depth replacement sections under the overpasses. A rut resistant modified binder mix was used at the surface of the pavement, and a “rich-bottom” layer was used to provide resistance to fatigue cracking. Construction occurred during 55 hour weekend closures. This paper discusses the design and construction, and the lessons learned during all phases of the project. The success of the project was due to partnering during all phases between Caltrans, the Asphalt Industry, and academia.