Restructuring of Combined Underground, Above-Ground, and Deck Spaces Through Collaboration of Multiple Projects: Shinjuku Station, the Leading Large-Scale Multi-Use Station in Japan

An integrated development, including underground, above-ground, and elevated deck levels, is underway centered around Shinjuku Station, which is used by multiple railway operators and has the world's largest number of passengers passing through it daily. There is a need to improve the current issues of congestion and lack of pedestrian networks resulting from the complex intersections of railway transfer lines and connections between station to town. In addition, major underground urban facilities (railway lines and public parking lots) need to be updated at the west and southwest exits of Shinjuku Station. By utilizing 3D digital technologies such as BIM models, we are preparing to meet the complex development challenges by creating a database of infrastructure and buildings and examining how to effectively utilize underground space. For the past two years, the Tokyo Metropolitan Government has been experimenting with the latest technologies, such as autonomous driving, in the area west of the station, and it is expected that the development of the station will proceed in a manner that integrates such technologies. Nikken Sekkei leads the overall development of the complex intertwining of various elements, including Shinjuku Station and the surrounding urban area.