10月4日 神戸から淡路島へ向かった 全長3,911m、中央支間1,991mで世界最長の吊り橋で、明石海峡大橋の主塔の高さは海面上298.3mであり、国内では東京タワー(333.0m)に次ぐ構造物だそうです 建設当初は全長3,910m、中央支間1,990mであったが、1995年1月17日の阪神・淡路大震災で地盤がずれ、1m伸びたそうです 下の写真は吊橋に使われているワイヤーの断面です
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