The Majestic Arches of the Shimanami Kaido: A Bridge-by-Bridge Guide to All Six Islands
Welcome, fellow adventurers, to the shimmering sapphire waters and emerald islands of the Seto Inland Sea! If you’ve found yourself on Onomichi Guide, chances are you’re dreaming of the Shimanami Kaido – Japan’s most famous cycling route, a breathtaking 70-kilometer journey connecting Honshu with Shikoku. But beyond the cycling itself, the true marvel of the Shimanami Kaido lies in its magnificent bridges, each a unique architectural masterpiece that stitches together six distinct islands, offering unparalleled views and unforgettable experiences.
As someone who’s spent countless hours exploring every twist and turn of this incredible route, I can tell you that understanding the bridges isn’t just about crossing them; it’s about appreciating the engineering, the views they offer, and the islands they connect. This comprehensive guide will take you on a virtual tour, bridge by bridge, island by island, revealing insider tips and must-see spots along the way. Get ready to discover why these ribbons of steel and concrete are much more than mere crossings – they are gateways to adventure!
The Onomichi-Mukoujima Connection: Your Shimanami Start Line
While Onomichi is the official start of the Shimanami Kaido, the very first “crossing” isn’t a grand bridge for cyclists. It’s an intimate, traditional ferry ride that sets the tone for the entire journey.
Onomichi Bridge & Shin-Onomichi Bridge
From Onomichi, two large bridges span the channel to Mukoujima Island: the Onomichi Bridge and the Shin-Onomichi Bridge. The Shin-Onomichi Bridge is exclusively for automobile traffic. The older Onomichi Bridge does allow bicycles and pedestrians, but its narrow lanes and lack of dedicated cycling paths make it less than ideal, even a bit daunting, for most cyclists, especially those with luggage. The official Shimanami Kaido cycling route, marked by its distinctive blue line, wisely directs you elsewhere.
The Preferred Cycling Start: The Mukoujima Ferry
Instead of battling the main bridges, the true Shimanami experience begins with a short, delightful ferry ride. Several small ferries operate frequently from Onomichi Port (Onomichi-ekimae Sanbashi, 1-1 Higashigosho-cho, Onomichi, Hiroshima 722-0036) to Mukoujima Island.
* Cost: Around ¥110 for a pedestrian, ¥10 for a bicycle (one way).
* Operating Hours: Roughly 6:00 AM to 9:00 PM, with ferries departing every 5-10 minutes during peak times. No need to check timetables, just show up!
* Insider Tip: This short crossing (about 5 minutes) is a wonderful way to begin. You’ll share the ferry with locals heading to work or school, giving you an authentic taste of island life. Once on Mukoujima, the blue line seamlessly guides you onto the route. Mukoujima itself is mostly residential and agricultural, but it marks the official start of your bridge-hopping adventure.
Innoshima & Ikuchi-jima: Island Hopping into the Heart of the Seto Sea
After Mukoujima, your first major bridge awaits, linking you to the island of Innoshima, famed for its pirate history and citrus groves.
Innoshima Bridge (因島大橋)
* Connects: Mukoujima Island to Innoshima Island.
* Type: Two-level suspension bridge. The upper deck carries the Nishiseto Expressway, while the lower deck is dedicated to bicycles, pedestrians, and mopeds. This dual-level design is a common feature of the Shimanami Kaido bridges, ensuring cyclists have their own safe passage.
* Length: 1,270 meters (main span: 770 meters).
* Cycling Experience: As you ascend the gentle, winding ramp to the lower deck, you’ll feel the exhilaration begin. The enclosed nature of the lower deck offers protection from the elements but still provides glimpses of the sea. It’s a fantastic introduction to the scale of these structures.
* Toll: ¥50 (bicycle).
* Island Highlight (Innoshima): Innoshima is rich in history, particularly its connection to the Murakami Suigun (pirates) who once controlled these waters. Don’t miss the Innoshima Suigun Castle (2463-3 Innoshima Ohamacho, Onomichi, Hiroshima 722-2101), Japan’s only remaining naval castle, offering fantastic views of the bridge and surrounding islands. The island is also famous for its Hassaku oranges; try some fresh juice or a local sweet!
Ikuchi Bridge (生口橋)
* Connects: Innoshima Island to Ikuchi-jima Island.
* Type: Cable-stayed bridge. Its elegant, fan-like array of cables is visually striking and a marvel of modern engineering.
* Length: 790 meters (main span: 490 meters).
* Cycling Experience: The approach to Ikuchi Bridge is generally gentle, leading you onto a wide, open deck. Here, you’ll feel more exposed to the elements than on Innoshima Bridge, but the panoramic views of the Seto Inland Sea, dotted with countless islands, are truly spectacular. This bridge offers excellent photo opportunities, especially on a clear day.
* Toll: ¥50 (bicycle).
* Island Highlight (Ikuchi-jima): Known as “Lemon Island,” Ikuchi-jima is famous for its citrus fruits, particularly lemons.
* Kosanji Temple (耕三寺, 553-2 Setodacho Setoda, Onomichi, Hiroshima 722-2411): A lavish and unique temple complex built by a wealthy industrialist in honor of his mother. It features replicas of famous Japanese temples and a stunning marble garden called “Hill of Hope.”
* Hirayama Ikuo Museum of Art (平山郁夫美術館, 200-2 Setodacho Setoda, Onomichi, Hiroshima 722-2411): Dedicated to the renowned Japanese painter, a native of Ikuchi-jima.
* Sunset Beach (サンセットビーチ): A beautiful spot for a break, with cafes and a pleasant atmosphere.
Omishima & Hakata-jima: Architectural Wonders and Sacred Sites
The journey continues, bringing you to two more distinct islands, connected by some of the most iconic bridges on the route.
Tatara Bridge (多々羅大橋)
* Connects: Ikuchi-jima Island to Omishima Island.
* Type: Cable-stayed bridge. At 890 meters, it was the world’s longest cable-stayed bridge when it opened in 1999 and remains one of the most impressive. Its distinctive “harp-like” cables are a sight to behold.
* Length: 1,480 meters (main span: 890 meters).
* Cycling Experience: This is arguably the most famous and visually stunning bridge on the Shimanami Kaido. The ascent is long but gradual, leading you high above the water. Once on the deck, the views are expansive and breathtaking. Stand directly under the main cables and listen – the bridge is famous for its “singing” sound, produced by the wind passing through the cables. There’s also a “Dolphin” monument at the base on the Ikuchi-jima side, which is a popular photo spot and marks the border between Hiroshima and Ehime prefectures.
* Toll: ¥100 (bicycle).
* Island Highlight (Omishima): Often considered the “spiritual heart” of the Shimanami Kaido.
* Oyamazumi Shrine (大山祇神社, 3327 Omishimacho Miyaura, Imabari, Ehime 794-1393): One of Japan’s oldest and most revered shrines, dedicated to the gods of mountains, seas, and warriors. It houses an impressive collection of ancient samurai armor and weapons (Treasure House entrance fee: ¥1000). A truly tranquil and historically significant site.
* Omishima Furusato Ikoi no Ie (大三島ふるさと憩の家, 5202 Omishimacho Miyaura, Imabari, Ehime 794-1304): A former elementary school converted into a charming guesthouse and café, offering a unique stay experience.
* Michi-no-Eki Omishima (道の駅しまなみの駅御島): A great spot for local produce, snacks, and a rest.
Hakata-Oshima Bridge (伯方・大島大橋)
* Connects: Omishima Island to Hakata-jima Island, then Hakata-jima to Oshima Island (it’s actually two distinct bridges with Hakata-jima in between).
* Type: The first part (Omishima to Hakata-jima) is a box-girder bridge, and the second part (Hakata-jima to Oshima) is a suspension bridge.
* Length: Total 1,230 meters (main spans: 560 meters and 320 meters).
* Cycling Experience: This bridge offers a unique experience as it lands you directly on the small island of Hakata-jima before continuing to Oshima. The first section is relatively flat, offering great views of the surrounding small islands. The second section, the suspension bridge, provides another excellent perspective of the Seto Inland Sea.
* Toll: ¥50 (bicycle).
* Island Highlight (Hakata-jima): Famous for its salt production.
* Michi-no-Eki Hakata SC Park (道の駅伯方S・Cパーク, 1379-2 Minamihakata, Hakata-cho, Imabari, Ehime 794-2305): A fantastic rest stop where you can try “Hakata no Shio” (Hakata Salt) soft-serve ice cream – a surprisingly delicious combination of sweet and salty! There’s also a beach and a small museum about salt production.
Oshima & Imabari: The Grand Finale – Kurushima Kaikyo Bridges
You’re now on Oshima, the last island before the Shimanami Kaido truly meets Shikoku. And what a finale it is!
Kurushima Kaikyo Bridges (来島海峡大橋)
* Connects: Oshima Island to Imabari City, Shikoku.
* Type: This is not one bridge, but a series of three magnificent suspension bridges – the Kurushima Kaikyo First Bridge, Second Bridge, and Third Bridge – linked together. It’s the world’s longest series of suspension bridges.
* Length: A staggering 4,105 meters (over 4 kilometers!).
* Cycling Experience: This is the most epic part of the Shimanami Kaido. The approach from Oshima involves a long, exhilarating spiral ramp that lifts you high above the water. Once on the main deck, you’re cycling across what feels like an endless ribbon of concrete, with the powerful currents of the Kurushima Strait swirling below. The sheer scale and length are awe-inspiring. Take your time, soak in the views, and appreciate the incredible engineering. There are several viewpoints along the way.
* Toll: ¥200 (bicycle).
* Island Highlight (Oshima):
* Kirosan Observatory Park (亀老山展望公園, 2-140-1 Yosumi, Yoshiumi-cho, Imabari, Ehime 794-0881): A must-visit detour! Located at the top of Mt. Kirosan, this observatory offers arguably the most iconic panoramic view of the Kurushima Kaikyo Bridges and the surrounding Seto Inland Sea. It’s a steep climb (either by bike or a short taxi ride from the base), but the reward is immense, especially at sunset. There’s also a cafe at the top.
* Yoshiumi Iki-iki Kan (道の駅よしうみいきいき館, 4520-2 Yoshiumichoyoshiumi, Imabari, Ehime 794-0985): A fantastic Michi-no-Eki offering fresh seafood BBQ, local specialties, and souvenirs. It’s a perfect spot for a celebratory meal after conquering the bridges.
Cycling the Bridges: Practical Tips & Enjoying the Views
Successfully navigating and appreciating the Shimanami Kaido bridges requires a bit of planning and a lot of enthusiasm. Here are some essential tips:
* Toll System: Each bridge has a small toll for cyclists (ranging from ¥50 to ¥200). You can pay with exact change at coin boxes at the start of each bridge, or purchase a “Shimanami Cycle Pass” (しまなみサイクルパス) at bike rental terminals or some Michi-no-Eki. This pass is a sticker card with tear-off sections for each bridge, making payment easier. The total toll for the entire route is ¥500.
* Wind Conditions: The Seto Inland Sea can be windy, especially on the exposed bridge decks. Headwinds can be challenging, so check the weather forecast before you go. Strong winds can occasionally lead to bridge closures for cyclists, though this is rare.
* Elevation & Approaches: All bridges have long, spiraling, or winding ramps to gain elevation, keeping the gradient manageable. These approaches are part of the experience and offer unique views. Don’t underestimate the cumulative effect of these climbs, especially if you’re not an experienced cyclist.
* Photo Opportunities: Each bridge offers incredible photo opportunities. Look for designated viewpoints or safe pull-off areas. The Tatara Bridge and Kurushima Kaikyo Bridges are particularly photogenic.
* Maintenance & Safety: The cycling paths on the bridges are well-maintained, smooth, and clearly marked with the blue line. While generally safe, always be mindful of other cyclists, pedestrians, and mopeds. Helmets are mandatory for rented bikes and highly recommended for all.
* Rest Stops & Michi-no-Eki: The islands are dotted with Michi-no-Eki (roadside stations) and smaller shops. These are excellent places to rest, refuel, find local delicacies, and use restrooms. Plan your stops to coincide with these facilities.
* Hydration & Snacks: Even with rest stops, carry plenty of water and some energy-boosting snacks, especially on hot days. There can be stretches between amenities on the bridges themselves.
* Bike Rental & Return: You can rent bikes at official Shimanami Kaido Cycle terminals in Onomichi or Imabari, and return them at any of the terminals along the route, usually for an extra fee. This flexibility is fantastic if you want to cycle only a section or need to cut your ride short. A standard rental for an adult is around ¥1,100 per day, plus a ¥1,100 deposit (which is returned if you return the bike to the same terminal, or forfeited if you drop it off at a different one). Electric-assist bikes are also available at a higher rate (around ¥1,600 per day).
FAQ Section
Q1: Can I walk across the Shimanami Kaido bridges?
A1: Yes, absolutely! All of the Shimanami Kaido bridges that cyclists use also have dedicated pedestrian paths. However, walking the entire 70km route is a significant undertaking. Many people choose to walk a section, especially the magnificent Kurushima Kaikyo Bridges near Imabari, or explore specific islands on foot.
Q2: Are there any bridges on the Shimanami Kaido that cyclists cannot use?
A2: Yes. The main Shin-Onomichi Bridge is exclusively for automobile traffic. While the older Onomichi Bridge technically allows cyclists, it’s strongly discouraged due to narrow lanes and safety concerns. The official Shimanami Kaido route bypasses these by directing cyclists to the short, convenient ferry from Onomichi to Mukoujima Island, which is the recommended start.
Q3: How much do the bridge tolls cost for cyclists, and how do I pay?
A3: The total cost for all bridge tolls for a bicycle along the entire 70km route is ¥500. You can pay with exact change at coin boxes located at the start of each bridge’s cycling path, or purchase a “Shimanami Cycle Pass” (しまなみサイクルパス) at bike rental terminals or Michi-no-Eki. This pass is a convenient sticker card with tear-off sections for each bridge.
Q4: What’s the best time of year to cycle the Shimanami Kaido bridges?
A4: Spring (March to May) and Autumn (October to November) are generally considered the best times. The weather is usually mild and pleasant, and the scenery is beautiful (cherry blossoms in spring, vibrant foliage in autumn). Summer (June to September) can be very hot and humid, with a higher chance of typhoons, while winter (December to February) can be cold and windy, though sunny days are still common.
Q5: Is it possible to camp near the bridges or on the islands?
A5: Yes, there are several designated campsites on the islands along the Shimanami Kaido. Some popular options include “Furusato-no-Hama Campground” on Ikuchi-jima and “Innoshima Ohama Campground” on Innoshima. It’s always best to check their availability and booking procedures in advance, especially during peak seasons.
Conclusion: Beyond the Bridges, an Unforgettable Journey
The Shimanami Kaido is more than just a cycling route; it’s an immersive journey through Japan’s stunning Seto Inland Sea, an experience woven together by these incredible bridges. Each arch, each cable, each span tells a story of human ingenuity meeting natural beauty. From the initial ferry ride from Onomichi to the grand finale across the Kurushima Kaikyo Bridges, you’ll be constantly amazed by the engineering prowess and the ever-changing vistas.
So, pack your bags, tune up your bike, and prepare to cross these magnificent arches. Whether you’re a seasoned cyclist or a casual explorer, the Shimanami Kaido bridges offer a perspective of Japan you won’t find anywhere else. They are not just crossings; they are destinations in themselves, inviting you to pause, breathe, and soak in the magic of island life. We can’t wait to see you here!