Jogakura Bridge
Jogakura Bridge
城ヶ倉大橋
Aomori, Aomori, Japan
400 feet high / 122 meters high
837 foot span / 255 meter span
1995
No other country on earth has as many steel box beam arch bridges as Japan. The spectacular Jogakura arch bridge is one of Japan’s largest and highest with a main span of 837 feet (255 mtrs). Located in a region popular with mountain spa retreats, the famous bridge has a reputation for attracting an occasional suicide jumper.
Jogakura was the first large arch bridge in Japan to be built with an arch span to height ratio of 10.8. This gives the profile of the arch a very shallow and flat look that many find more appealing. Some also feel the higher elevation level of the foundations are more environmentally friendly to the river gorge.
This extremely high span to height ratio was surpassed in 2019 when the Tenryukyo arch bridge opened near lida with a ratio of 11.1. In Portugal the Infante Dom Henrique Bridge opened in 2003 with a 280 meter main span with a shallow arch rise ratio of just 11.66.
Although not as large, a 107 meter span arch in Japan has a ratio of just 12.5.
日本ほど鋼箱ビームアーチ橋をたくさん持っている国は、他にはありません。壮観な城ヶ倉大橋は255mのメインスパンを持つ、日本一大きくて高い橋の一つです。温泉保養で人気のある地域に位置していますが、この橋は時々、投身自殺者を引き付けることでも有名です。
Image by PT Consulting.
Image by PT Consulting.
Image by PT Consulting.
Image by PT Consulting.
World's 3 Largest Flat Arch Bridges
Jogakura Bridge satellite image.
Jogakura Bridge location map.