The Innoshima Bridge is a crucial link in the Shimanami Kaido, a 70-kilometer cycling and walking route connecting Honshu and Shikoku islands across the Seto Inland Sea. Opened nearly 40 years ago, this suspension bridge is notable for its two-tiered structure: the upper deck carries vehicular traffic, while the lower deck is dedicated to bicycles, mopeds, and pedestrians. This design provides a safe and immersive experience, allowing visitors to enjoy panoramic sea views away from the main road.
Visitors frequently highlight the bridge's unique design, particularly the dedicated lower path for cyclists and pedestrians, which many find exciting and secure. The gradual incline of the approach ramps, often described as serpentine, makes the ascent manageable even for those carrying heavy gear or using regular bikes. Reviewers consistently praise the outstanding views of the Seto Inland Sea and surrounding islands, noting that the experience of crossing the bridge is a highlight of their Shimanami Kaido journey. The feeling of being 'caged in' yet still having spectacular views is a common positive observation.
For a rewarding experience, plan to spend approximately 1.5 to 2 hours crossing the bridge and enjoying the views, especially if you stop for photos. The best time to visit is during good weather, as it can get quite windy. Cyclists recommend visiting Ohama Park for a swim or exploring the Innoshima Flower Line panoramic road towards Mt. Shirataki on the Innoshima side after crossing. Pedestrians and cyclists can cross for free, while mopeds incur a small 50 yen toll. Bring water and sun protection, especially on sunny days, as the path is exposed.
The Innoshima Bridge is accessible as the first bridge on the Shimanami Kaido cycleway when starting from Onomichi. While driving over the bridge offers a quick passage, the true experience is gained by cycling or walking the lower deck. The bridge is located in Innnoshima Ohamacho, Onomichi, Hiroshima Prefecture. Public transport options to Onomichi are available, and from there, rental bikes are widely accessible to begin the Shimanami Kaido route. The approaches to the bridge are well-signposted for cyclists and pedestrians.
Some visitors note that from a distance, the bridge, after nearly 40 years, might blend into the landscape. However, the experience of actively crossing it, especially on the lower deck, consistently overrides this initial impression. While it can be crowded on weekends, particularly in the morning and evening, the dedicated paths generally manage the flow well. Those with vertigo might find the height challenging, but the secure, caged path mitigates much of this concern.