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Pre- and Postconstruction Analysis of the Interstate 15 (Devore) Concrete Pavement Reconstruction Project

UCD-ITS-RP-05-47

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This case study presents an innovative fast-track reconstruction approach applied to a heavily trafficked Long Life Pavement Rehabilitation Strategy (LLPRS) project on Interstate-15 (I-15) in Devore in southern California. A 4.5-km stretch of badly damaged concrete truck lanes was rebuilt in only two 210-hour (about 9 days) one-roadbed continuous closures, using counterflow traffic and 24-hour operations. The same project would have taken 10 months using traditional nighttime closures. This "Rapid Rehab" project adopted state-of-the-practice technologies to accelerate construction, to mitigate traffic disruptions, and to propagate project information. As a result, traffic demand through the construction work zone was reduced by 20 percent, and the maximum peak-hour delay was reduced by 50 percent. Web surveys showed dramatic changes in public perception to the Rapid Rehab approach from initial reluctance and objection to support. Advantages of using this method of fast-track accelerated reconstruction included: a shorter period of disruption for the traveling public, 30-year life expectancy for the new pavement, improved safety for motorists and workers, and a 25 percent reduction in construction costs ($6 million savings) when compared to traditional repeated nighttime closures.