The Optimization Method of Stage-wised Construction Process of Large-scale Expressway Network and its Application

Abstract

Expressway networks are generally constructed in stages over a long period of time. Thus it is not guaranteed that the stage-based network construction process, in which the prioritization is based only on a short-term evaluation of each project, is optimal.

In this study, we propose methodology for optimizing the stage-based construction process, and search for optimum construction processes for future Japanese expressway network. Moreover, we compare these optimum processes with the stage-based construction process, and consider the future course for Japanese expressway network construction.