EXECUTIVE SUMMARY

This synthesis presents the results of studies of interstate highways in three states which show the comparison of costs between hot mix asphalt (HMA) pavements and portland cement concrete (PCC) pavements.

The process used to determine the economical performance of pavements over time is called "Life-cycle Cost Analysis" (LCCA). There are two ways of using LCCA: (1) For the prediction of future costs of proposed pavements over a given period of time, using the best available information as to total costs and predicted performance; and (2) For the determination of actual costs of existing pavements over a given period of time based on historical data from agency records.

The three studies in this synthesis use the second way, which takes actual costs of all work performed to construct and maintain a pavement from agency records and the times at which the costs were incurred to determine the total cost of the pavements over time. In all cases, comparisons were made to the greatest extent possible of HMA and PCC pavements with similar traffic and comparable age.


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