Study on Planning of New Underground Railway & New Station in The Yaesu-Kyobashi-Nihonbashi District (Part 2)

The Urban Underground Space Center of Japan (USJ), composed of public, private and academic sectors, aims at utilizing urban underground space through various activities like research, study etc. This paper is the second report of the Yaesu-Kyobashi-Nihonbashi Committee USJ’s Three - year project on planning of new underground railway station supposed to be constructed near Tokyo Station once the railway network is to be realized, connecting Tsukuba and Haneda Airport and running through near Tokyo Station, Tokyo Bay Area etc. This research is vital for Yaesu-Kyobashi-Nihonbashi district as many redevelopment projects are carried out vigorously in conjunction with sharp increase in the volume of passenger traffic passing this district. This time, we mainly report the purpose and role of new underground railway, and the comparative study of route plans. The route plans of A, B and C are compared in terms of the three elements – construction costs, accessibility to the existing Tokyo Station and contribution to revitalization of the district. As a result of the study, it was suggested that it would be desirable to build a new underground railway under the Chuo-dori street from the viewpoint of town development of this district.