Abstract
Although the various measures are taken now, which decrease the influence of construction on the street, the effect of each measure is not necessarily clarified. Therefore we need more consideration about the existing construction management method in terms of Benefit/Cost. In this paper, we focused on the time loss of the road user by traffic congestion among the social influences of construction, measured it from the survey of construction site, and showed the congestion cost in national highways in Tokyo approximately. Although this is only a part of social cost of construction, it corresponds to about twenty percent for the utility companies' construction cost. We considered about the influence that introduction of the lane rental system will affect companies' decision making based on the idea of making utility companies pay.
