This report discusses the investigation of the premature cracking that has been occurring on the National Turnpike, Jefferson County since 1989. A report was issued in 1990, KTC-90-5. This report documents performance to date. A detailed distress survey was performed evaluating each slab throughout the project site.

The distress survey indicates that substantial pavement cracking has occurred since the last visual inspection in 1990.

An intense maintenance program is recommended.

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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 inclusion of manufacturer names and trade names are for identification purposes and are not to be considered as endorsements.