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拱桥,具有造形轻盈、结构合理和用料经济等特点。早在1370多年前,我国隋朝石匠在河北省就造了一座闻名世界的石拱桥——赵州桥。但是,当时桥长只有50.8米,跨度为37.4米。从这以后,拱桥逐步发展,1966年,四川省渡口市建成了两座180米长的拱桥,成为我国当时最大的公路钢拱桥。呼玛大桥是我国新建的跨度最大
Arch bridge, with light weight, reasonable structure and material economy and so on. As early as 1370 years ago, China’s Sui Dynasty masons built a world-famous stone arch bridge in Zhaozhou - Zhaozhou Bridge. However, at that time, the bridge length was only 50.8 meters and the span was 37.4 meters. Since then, the gradual development of the arch bridge, in 1966, Sichuan Province, built two ferries 180 meters long arch bridge, became China’s largest highway steel arch bridge. Huma Bridge is China’s largest new span