The Kawazu Nanadaru Loop Bridge, completed in 1982, is a remarkable example of civil engineering designed to overcome the challenging, steep topography of the Izu Peninsula. This double-spiral bridge, also known as the 'Nanadaru Loop Bridge' or 'Kawazu Nanadaru Loop Bridge', allows traffic to ascend or descend 45 meters (147 feet) while rotating 720 degrees, making it a distinctive landmark on the route from Tokyo to the hot spring resorts of Shimoda.
Visitors consistently praise the bridge for its unique design and the scenic views it offers. Many describe the experience of driving on it as 'dizzying' but in an enjoyable way, highlighting the ingenuity required to build such a structure. The slow speed limit of 30 kilometers per hour (18 mph) is frequently mentioned as it allows drivers to fully appreciate the surrounding volcanic scenery and the engineering marvel itself. Some reviewers suggest stopping at the car park underneath the bridge to take photographs and observe its impressive scale from a different perspective.
For those planning a visit, it's recommended to allocate about 30 minutes to an hour, including time for driving across and stopping at the viewpoint. The best time to visit is during late March or early April when the Kawazu area is known for its early-blooming cherry blossom trees, adding another layer of beauty to the scenic drive. There are no specific items to bring, but a camera is highly recommended to capture the unique architecture and views. Consider combining a visit here with the nearby Kawazu Seven Waterfalls (Nanadaru Waterfalls) and Kawazu Village for a more comprehensive experience of the area.
The bridge is located on Route 414 in Kawazu, Shizuoka Prefecture. While specific public transport options directly to the bridge are limited, it is primarily accessed by car. The Izu Peninsula is generally best explored by car, offering flexibility to stop at various scenic points. There is a dedicated car park conveniently located directly underneath the center of the bridge's loops, making it easy for visitors to pull over and take photos. Drivers should be mindful of the 30 km/h speed limit on the bridge itself.
Common complaints are rare, but some drivers might find the spiraling motion disorienting. Adhering strictly to the posted speed limit helps mitigate any discomfort and ensures a safe and enjoyable experience. The bridge can get busy during peak tourist seasons, especially during cherry blossom season, so expect some traffic.
