Abstract
In recent years, many studies have made the advantages of compact cities clear. In this study, we classified one kilometer grid cells in Japan into 60 area characteristical categories, and analyzed the relationship between the area characteristics, road length, and road maintenance and renewal cost. As a result, we showed that there is many differences in road maintenance and renewal cost per capita among area characteristical categories. In addition, we estimated future road maintenance and renewal cost in two scenarios. The first, a scenario where population mitigation dose not occur, and a second that assume population concentrated in urban areas. As a result, we showed that road maintenance and renewal cost will be reduced if the population urbanizes, but the rate of reduction is 0.2%.
