Akashi Kaikyō Bridge

The , also known as the Pearl Bridge, is the world's longest suspension bridge. 
Akashi-Kaikyō connects the island of Honshu with Awaji Island in the Seto Inland Sea. The bridge is part of the Honshu-Shikoku Highway which allows automobiles to cross the Akashi Strait.
History.
The construction of the bridge began in May 1988. The bridge was opened on April 5, 1998.
The cost of building the bridge is estimated at 500 billion yen.