OHASHI JUNCTION 'COMMUNITY, ROAD, RE-DEVELOPMENT INTEGRATED PROJECT'

摘要

Metropolitan Expressway Company Limited, in Tokyo, is constructing the world 2~(nd) longestroad tunnel, called the “Yamate Tunnel,” in the centre of the capital, in order to alleviateheavy congestion on the motorway network in Tokyo. The Yamate Tunnel is an essentialpart of the Metropolitan Central Circular Route (the Central Circular Route) which is one ofuncompleted ring roads in Tokyo.The Ohashi Junction connects two routes within the congested urban area: the YamateTunnel, a newly opened ring road, and the Metropolitan Expressway Route #3 (Route #3),an existing radial road. There is no other junction in the world that can rival the junction fortechnological perspectives.The Ohashi Junction is a totally new urban junction, and has provided innovative solutionsto city planning, smooth traffic, roadside environment, and other issues in the constructionof urban expressway in the Tokyo Metropolitan area. First of all, three dimensional zoningsystem is used to encourage compact development and effective land use within theredevelopment area. Secondly, the rooftop park and garden as well as the greeneryaround the junction is expected to reduce the negative environmental impact on thesurrounding neighborhood. In addition, the policy on higher safety on disaster-preventionand comfort of driving is adopted since the Ohashi Junction has particular condition. Thispaper reports various environmentally friendly approaches to realize a sustainablecommunity.