Shin-Onomichi Bridge

The Shin-Onomichi Bridge spans 549 meters across the Onomichi Channel, featuring two main towers reaching 78.3 meters in height with distinctive honey cream coloring.

Construction of this steel box girder bridge commenced in response to increased traffic demands on the original Onomichi Bridge, leading to its official opening in May 1999.

The bridge forms an integral part of the Nishiseto Expressway, connecting Honshu with the island of Mukaishima through a modern engineering structure in the Seto Inland Sea.

Located 6 kilometers from Fukuyama-West Interchange on the Sanyo Expressway, the bridge carries National Route 317 with a road width of 14 meters across four traffic lanes.

The structure incorporates an experimental dehumidification system that circulates dry air inside the box girders to prevent internal corrosion, marking a first in Japanese bridge engineering.

Location: Onomichi

Official opening: May 1, 1999

Website: https://jb-honshi.co.jp/shimanami/about/shimanami/p01.html

GPS coordinates: 34.40981,133.21628

Latest update: November 28, 2025 14:29