The 9th-Street interchange was designed and constructed with an automated, electrical heating system for snow and fee removal. This report describes the heating system, its construction, and initial operation. The heating system was capable of keeping the interchange free of ice and snow accumulation. The average daily slab temperature fell below 32°F (0°C) on only one occasion. The average cost of electrical power for heating the interchange was $905 per day.

Report Date


Report Number

No. 486

Digital Object Identifier



The contents of this report reflect the views of the authors who are responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the Federal Highway Administration or the Kentucky Bureau of Highways. This report does not constitute a standard, specification, or regulation.