World's biggest onshore caisson put into place
chinadaily.com.cn | 2017-11-10 14:59
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The world's biggest onshore caisson, as part of a railway-highway bridge across the Yangtze River in Zhenjiang, Jiangsu province, is put into place on Nov 10, 2017.The construction of the caisson was carried out in three phases. [Photo by Liu Yangsen/chinadaily.com.cn]
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