Long-term monitoring of low-volume road performance in Ontario.

This paper discusses the long-term pavement performance observed on Ontario's low-volume roads. These low-volume roads, which carry fewer than 1,000 vehicles per day, comprise some 3,715 center-line kilometers in length, about 20 per cent of the total Ontario provincial road network. The long-term monitoring of pavement performance trends on these low-volume roads spans twenty years, and includes performance measures of pavement roughness, distress and overall pavement condition. Most of the observed pavement sections have been rehabilitated or re-constructed several times since 1985. The main objectives of this paper are to: 1) review the pavement rehabilitation and maintenance treatments applied on Ontario provincial highways over the last twenty years, focusing on observed pavement performance records of individual treatments versus age, construction costs and predicted performance curves, 2) analyze pavement life-cycle costs and overall long-term performance of the typical pavement structures used in the past, and 3) compare the pavement performance curves of specific pavement maintenance and rehabilitation (M&R) treatments applied to these low-volume roads. For the covering abstract of te conference see ITRD number E211521.