This report presents findings from an analysis of Long-Term Pavement Performance program data. This analysis was undertaken to verify and propose enhancements to the existing overlay design procedure using the Mechanistic-Empirical Pavement Design Guide (MEPDG) rehabilitation design methodology.
 

The purpose of this report is to document the results from comparing the amount of fatigue cracking to the in-place damage estimated through a modulus ratio between backcalculated elastic modulus values and laboratory-measured dynamic modulus values. The audience for this report includes pavement researchers as well as practicing engineers using AASHTOWare® Pavement ME Design software for rehabilitation design.