The Kawazu Nanadaru Loop Bridge, also known as the Nanadaru Loop Bridge, is a marvel of engineering located in Kawazu, Shizuoka, Japan. The bridge features a unique design with two complete loops, making a total of 720° turns.
Built in 1981, the Kawazu Nanadaru Loop Bridge replaced a section of National Route 414 that was destroyed by a landslide triggered by the 1978 Izu Ōshima earthquake.
The loop design of the bridge helps overcome the steep slopes while also prioritizing safety compared to the original route with sharp turns. “The Kawazu Nanadaru Loop Bridge is a brilliant example of how engineering can adapt to and overcome challenging natural landscapes,” says civil engineer Hiroshi Tanaka.
Current Use.
The bridge allows cars, motorcycles, and bicycle traffic. However, the speed limit is restricted to 40 km/h (25 miles/hr), and overtaking is prohibited. The Kawazu Bridge is an award-winning design; it received the Tanaka Award from the Japan Society of Civil Engineers in 1981.
While not a dedicated tourist attraction, the bridge is a popular spot for travelers driving along National Route 414, offering a unique driving experience and stunning views of the surrounding landscape.
