Tamasuidō-bashi, Road bridge in Komae and Tama-ku, Japan.
Tamasuidō-bashi is a 358.8 meter arch bridge spanning the Tama River and connecting Komae with Tama-ku. It carries both traffic on its deck and functions as a water channel, with its curved design supporting dual purposes.
Construction started in 1995 and proceeded in stages until completion in 2001. This project was part of Tokyo's broader effort to improve transportation links across the metropolitan area.
The bridge serves as a daily passage for commuters crossing between the districts and has become a familiar landmark in the local landscape. It represents how modern infrastructure shapes the way people move through their neighborhoods.
The bridge carries the Tokyo Metropolitan Road and Kanagawa Prefectural Road Route 3, making it a key link for traffic between the two districts. It remains open daily for vehicle passage and provides the most direct route across the river.
The structure serves three purposes at once: carrying vehicle traffic, allowing water flow through it, and functioning as an arch bridge. This triple-purpose design is uncommon and demonstrates how Japanese engineers solved multiple infrastructure challenges in a single construction.
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