This report is presented in two volumes. The first volume summarizes the state-of-the- art on pavement overlay design and presents a research plan to develop an overlay design procedure for the Washington State Department of Transportation (WSDOT). The second volume contains an annotated bibliography of significant pavement overlay literature published since 1968.
The state-of-the-art review presented in Volume I addresses pavement evaluation using nondestructive testing and subjective ratings. These are discussed along with the topics of traffic and seasonal variations. Pavement overlay design concepts are identified and discussed. A research plan is presented for the development of a pavement overlay design system for WSDOT.