NINE-YEAR PERFORMANCE EVALUATION OF ARIZONA'S PRESTRESSED CONCRETE PAVEMENT.

The Arizona Department of Transportation constructed an experimental prestressed pavement in 1977 and has monitored its condition for the past 9 years. The traffic volume on the pavement has greatly exceeded the design assumptions. Experiments conducted at the time of construction provide valuable data on curling and warping, shrinkage, elastic shortening, and so forth. Annual measurements of roughness and friction number have been collected, and periodic condition surveys have been made. The condition survey conducted in 1986 found that distress had developed in the pavement since the last survey in 1983.