19th WORLD CONFERENCE OF THE ASSOCIATED RESEARCH CENTRES FOR THE URBAN UNDERGROUND SPACE, Belgrade, Serbia, November 4-7, 2025. (Paper No: 1.19.100, pp. 201-206)
АУТОР(И) / AUTHOR(S): Kazuo Kiyama, Katsuya Amemiya
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DOI: 10.46793/ACUUS2025.1.19.100
САЖЕТАК / ABSTRACT:
: Nihonbashi Bridge is renowned as one of Japan’s most iconic and historically significant bridges, and the surrounding area has served as a center of commerce, finance, and culture for approximately 400 years. In recent years, the area has been expected to develop further as a tourist destination, with multiple urban redevelopment projects underway to enhance the appeal of the riverside environment. In addition, construction is progressing to relocate the Metropolitan Expressway—currently built above Nihonbashi Bridge—underground.
Among these initiatives, the Nihonbashi 1-Chome Central District Urban Redevelopment Project (hereafter referred to as “the N1-C”) is scheduled to be the first of the ongoing projects in the area to be completed. The Nihonbashi riverside area currently faces serious challenges for pedestrian circulation, including complicated and multi-level transfer routes between subway stations on different lines, which hinder smooth movement.
To address these issues, the redevelopment association for the N1-C, in which Mitsui Fudosan is also participating, has put forth four key policies: (1) Development of smooth, barrier-free underground routes, (2) Enhancement of transportation connectivity through the installation of new subway ticket gates, (3) Development of seamless connection spaces enabling smooth movement from underground to deck level, and (4) Establishment of an area-wide pedestrian network in coordination with surrounding redevelopment projects.
This paper presents the N1-C as a case study, highlighting its efforts to create underground space in collaboration with various surrounding redevelopment projects while respecting the location and historical context of the Nihonbashi riverside area.
КЉУЧНЕ РЕЧИ / KEYWORDS:
urban redevelopment project, barrier-free route, transport connectivity, connection space, collaboration
ПРОЈЕКАТ / ACKNOWLEDGEMENT:
ЛИТЕРАТУРА / REFERENCES:
- Metropolitan Expressway Co., Ltd. (2024, September). Pamphlet for the undergrounding project of the Nihonbashi section of the Metropolitan Expressway. https://www.shutoko.jp/ss/nihonbashi-tikaka/gallery/nihonbashi_pamphlet.pdf
- Chuo City, Tokyo. (2021, June). Vision for urban development along the Nihonbashi River area 2021. https://www.city.chuo.lg.jp/documents/5126/kawazoivis2021.pdf
- Mitsui Fudosan Co., Ltd. (2025, June). Press release: Nihonbashi community development promoted by Mitsui Fudosan. https://www.mitsuifudosan.co.jp/corporate/news/2025/0611/
- Mitsui Fudosan Co., Ltd., & Nomura Real Estate Development Co., Ltd. (2016, May). Outline of Special Urban Regeneration District (Nihonbashi 1-Chome Central District): City planning (draft). https://www.chisou.go.jp/tiiki/kokusentoc/tokyoken/tokyotoshisaisei/dai12/shiryou1.pdf