Fukumasugawa Bridge

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Fukumasugawa Bridge
福桝川大橋
Jinseki-kogen, Hiroshima, Japan
(328) feet high / (100) meters high
459 foot span / 140 meter span
2001

3FukumasugawaOsakaUniversity.jpg

Image by Osaka University.


Japanese bridge engineers are fond of truss-arch bridges with inclined spandrel supports that create a continuous zigzag between the rib and the deck that look similar to a Warren truss. The Fukumasugawa is one of the highest of the type, spanning a deep 328 foot (100 mtr) gorge in Hiroshima prefecture. The span was constructed with corrosion resistant steel like the New River Gorge bridge in the U.S. state of West Virginia. The rust-like outer layer protects the bridge and eliminates the need for periodic and expensive painting.

The Warren truss arch is asymmetrical with the tunnel side much shallower in depth.


日本の橋梁エンジニアは、トラスアーチ橋とワーレン形式トラスに似ているリブとデッキの間に連続したジグザグを造る傾斜スパンドレル補強を好みます。広島県の100m深い峡谷に架かっている福桝川大橋はこのタイプの一つです。この橋は、アメリカ・バージニア州のニューリバー峡谷橋のように、腐食予防鉄鋼を使って架設されました。橋の外層を錆びから防ぎ、将来行われるはずの定期的な費用のかかる塗装工事を取り除いた訳です。


1FukumasugawaOsakaUniversity.jpg

Image by Osaka University.


2FukumasugawaOsakaUniversity.jpg

Image by Osaka University.


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Fukumasugawa Bridge satellite image.


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Fukumasugawa Bridge location map.


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