Sotobori-area flood basin pipe work Part2 in Ichigayahonmura-cho, Shinjuku-ku Civil engineering Kanto Water and Sewage Facilities 2021~2025 Outline Client Bureau of Sewerage Tokyo Location Ichigayahonmuta-cho, Shinjuku-ku, Tokyo Completion 2022.11 Work Summary Shiled tunneling method φ3000mm L=2,276.75m Return to list