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桥梁建筑纪录片《擎天玉柱 2020》自人类诞生起，桥梁就与我们共同发展。这些迷人建筑的诞生，可以追溯到几千年前的远古时期。原始人追逐猎物时，会用树干搭在两岸过河，成为桥梁的雏形。今天，很多桥梁都以超现代结构的方式呈现。可以说，一个个堪称奇迹的工程背后，浓缩的是社会进步的方式。
