Pavement Maintenance Level and Annual Budget over the Regional Road Network

Abstract

In this study, a pavement management system was developed by use of pavement performance data collected by local government of Iwate prefecture. We analyzed the relationship between long term levels of service for a road pavement and annual budget for its maintenance and repair. According to a reduction of an annual budget for road maintenance and repair in recent years, it would be impossible to continue to maintain whole road network in the near future. The roads which would be impossible to continue to maintain was calculated under the conditions including an annual budget given and was depicted on GIS. The MCI was used as the index of the level of service of a road pavement and the deterioration of it. A long term simulation of pavement maintenance over the road network was executed. The calculation included the selection of a method of pavement maintenance on each road link and totalized the cost under an annual budget. It was confirmed quantitatively and visually that it became impossible to continue to maintain whole road network, after an annual budget was extremely decreased. We need to abandon the maintenance of whole road network and choose the road continuing to perform. This paper aimed to make a consensus for a long term planning of maintenance and repair of the regional road network that contains a determination of level of service for the network and a required annual budget.