Many innovations seem only to appear where there is a really unusual need, warranting an unusual solution. The Kawazu-Nanadaru Loop Bridge (河津七瀧ループ橋) in Japan is one such example: How do you build a bridge along a mountainside when the grade is so steep that switchbacks aren’t practical? This double spiral brings cars up and down […]
Entries Tagged as 'Engineering'
Japanese Double Loop Spiral Bridge
December 26th, 2007 · 3 Comments
Tags: Engineering · Japan









