Construction Productivity Analysis for Asphalt Concrete Pavement Rehabilitation in Urban Corridors

This paper presents the results of a constructability and productivity analysis for the Caltrans Long Life Asphalt Concrete Pavement Rehabilitation Strategies (LLACPRS). With the assistance of California asphalt concrete paving contractors, the analysis explored the effects on construction productivity of rehabilitation materials, design strategy (crack seat and overlay, full-depth replacement), layer profiles, AC cooling time, resource constraints, and alternative lane closure tactics. Deterministic and stochastic analysis programs were developed. A sensitivity study was performed that examined construction production within a 55-hour weekend closure. Weekend closures were also compared to continuous closures. Demolition and AC delivery truck flows were the major constraints limiting the AC rehabilitation production capability. This study concludes that efficient lane closure tactics designed to work with the pavement profile can minimize non-working time to increase the construction production efficiency. The results of this study will help road agencies evaluate rehabilitation strategies and tactics with the goal of balancing the maximization of production capability and minimization of traffic delay during urban rehabilitation.