The Metropolitan Expressway (Shuto Expressway) company will close the downbound section of the No. 1 Haneda Route between Shibaura and Katsushima in Tokyo, Japan.
This is part of renewal work on the No. 1 Haneda Route between Higashi-Shinagawa Pier and Samezu Reclamation. The full closure will be in effect all day from May 9 to 10. In the event of stormy weather, the work will be postponed to backup dates. The backup dates are May 23–24, June 6–7, and June 20–21.
As heavier-than-usual congestion is expected on the Shuto Expressway and surrounding local roads, drivers are being asked to cooperate in easing traffic by refraining from using cars where possible. Detailed information on the closure, congestion forecasts, and detour routes will be posted as needed on a dedicated special website.
Until now, the downbound Haneda Route had been temporarily using the future upbound Haneda Route, on which renewal work had already been completed. For this temporary operation, it was necessary to connect the existing downbound Haneda Route and the renewed upbound Haneda Route, and for structural reasons the pavement was raised to adjust the height. After the renewed downbound lanes were completed on October 29, 2025, traffic was switched back to the downbound Haneda Route. However, it has become necessary to remove (lower) the now-unneeded raised pavement, and the main line closure will be implemented to carry out this work.
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