Abstract
Also in the conventional studies, the quantitative evaluations of expressway network have been implemented. However, in these studies, it is not considered that the evaluation results depend on the construction process. Thus, it is not made clear whether or not the state-wised construction process of the expressway network in Japan was the optimum.
Therefore, in this study, we evaluated the actual construction process of the expressway network in Japan, by comparing the actual process with the optimum process based on the long-range evaluation of the network and the process based on the evaluation of each project at each implementation step.