Abstract
In this study, targeting construction plan of national expressway network, we set some decision criteria for phased construction process and searched for the process based on each criterion. Then, we compared these searched processes from three viewpoints, socio-economic efficiency, profitability, promorting multipolarization of national land use. As a result, we made clear that it was possible to improve the socio-economic efficiency and profitability by deciding the process based on the long-range evaluation or based on the evaluation at each stage. Moreover, we also made clear that the processes only based on promorting multipolarization of national land use deteriorated the socio-economic efficiency and profitability.