Ondo Bridge, Red arch bridge in Kure, Japan.

Ondo Bridge is a red steel arch bridge over the Ondo Strait, connecting Kure with Kurahashi Island. Its lower-deck arch has a span of 114.88 m and a rise of 17.0 m, with a navigation clearance of 23.5 m marked in white on the deck beam. The bridge is part of a 1,184 m route that includes a spiral viaduct on the island side.

Built in 1961, this bridge replaced a busy ferry system that had transported passengers across the strait daily, transforming how people and goods moved in the region. The shift from water to road crossing marked a major change in local transportation infrastructure.

The bridge takes its name from the strait where local legends speak of a medieval leader who once called upon the setting sun to aid construction efforts in this region.

The original 1961 bridge has no sidewalk, so pedestrians cannot cross it; the 2013 Second Ondo Bridge includes a walkway. The clearance under the arch is 23.5 m, marked on the beam. The mainland side has about 8,300 azaleas that bloom around Golden Week.

Today three bridges cross the strait side by side: the original red structure, another completed in 2013, and a separate path for pedestrians. Together they form a modern system that serves different types of traffic alongside each other.