[Mr.BaD BoY]

The Kawazu - Nanadaru Loop Bridge



Many innovations seem only to appear where there is a really unusual need, warranting an unusual solution. The Kawazu-Nanadaru Loop Bridge in Japan is one such example: How do you build a bridge from one mountainside to another when the sides of the mountain are so steep that it is not possible to build a road at the same elevation on both sides? This double spiral brings cars up and down a full 45 meters (148 feet) while being seemingly suspended in a valley between two mountainsides.
Some other stats:
- 1.1 km long
- 80 meters in diameter
- speed limit: 30 km/h

Coming upon this bridge in the middle of this mountain road is quite an experience. The bridge was finished in 1982 and has become a popular landmark on route 414 heading south from Tokyo towards the hot spring resorts of the Izu peninsula.