Adoption of the Gyropress Method for the Undergrounding Project on the Nihombashi Section of the Metropolitan Expressway
First written in FY2024. 3 of 4 entries say "Advanced", first in FY2025. Latest entry: 2026-10-22.
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- FY2025AdvancedAnnual report
「In the underground Nihombashi section project, the centerpiece of the Metropolitan Expressway Renewal Project, construction of temporary revetments for widening the river channel using the Gyropress construction method progressed, continuing from the previous fiscal year. The project aims to complete the underground route in fiscal 2035, and the method is expected to be adopted for technically challenging work, including construction beneath bridge girders.」
Construction of temporary revetments in the underground Nihombashi section project progressed from the previous fiscal year, and plans remain in place for construction beneath bridge girders toward completion in fiscal 2035. - FY2024First statedAnnual report
「In the underground Nihombashi section project, the centerpiece of the Metropolitan Expressway Renewal Project, the Gyropress construction method was first adopted for construction of temporary revetments for widening the river channel and other work, with construction beginning in June. The project also includes pile work beneath the girders of existing bridges, with completion targeted for fiscal 2035.」
The Gyropress construction method was adopted for the underground Nihombashi section project, where existing bridges and buildings are in close proximity, and construction began in June 2024. The project is described as a long-term project targeting completion in fiscal 2035.