Asphaltic concrete pavements at intersections and their approaches, where traffic is required to stop and start, exhibit several types of distress. Among the more prominent forms of these distresses are deep rutting, pushing and shoving, and severe wash boarding. Prior research in this area has shown the leading causes of pavement failures at these locations are primarily materials related. Meaningful amounts of funds allocated for maintenance operations are exhausted each year to rehabilitate intersection pavements that have become safety hazards as a result of simple traffic action. Significant savings may be realized if intersections and their approaches are designed and constructed to accommodate the shear stresses as well as fatigue to which they are subjected. The overall purpose of this study has been to understand the factors that influence these distresses and determine procedures that may be implemented economically to significantly reduce the costly and repeated rehabilitation of intersection pavements. This report examines several innovative techniques used to accommodate higher stresses realized at these locations including whitetopping with Portland cement concrete, high-density plastic geogrids, and polymer-modified asphalts.

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The contents of this report reflect the views of the authors, who are responsible for the facts and accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the University of Kentucky, the Kentucky Transportation Cabinet, nor the Federal Highway Administration. This report does not constitute a standard, specification, or regulation. The inclusions of manufacturer names or trade names are for identification purposes and are not to be considered as endorsements.