The Kurushima Kaikyō Bridge (来島海峡大橋, Kurushima Kaikyō Ō-hashi), which connects the island of Ōshima to the main part of Shikoku, was the world's longest suspension bridge structure[1] when completed, in 1999.

The bridge is part of the Shimanami Kaidō, an expressway that spans a series of islands and connects Hiroshima Prefecture in Honshū to Ehime Prefecture in Shikoku.

There is a shared anchorage that joins each suspension bridge to the next.

Its construction is similar to the western portion of San Francisco–Oakland Bay Bridge which is two successive suspension bridges with four towers and one shared anchorage.

The bridge's total length of 4,015 metres (13,173 ft), is just a little longer than the total length of the two tower Akashi Kaikyō Bridge, which is 3,911 metres (12,831 ft).