横跨圣劳伦斯河下游的魁北克大桥，加拿大

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工程学杰作

魁北克大桥是一座跨越圣劳伦斯河下游的公路、铁路、行人三用桥，连接加拿大魁北克省的桑特富瓦和莱维斯。魁北克大桥是一个工程学杰作，两座桥墩之间有549米长的主跨。魁北克大桥是世界上最长的悬臂桥，比苏格兰的福斯桥还长了27米。

1907年8月29日，这座桥在建设过程中垮塌了。事故之后，政府接手了建设工程。1913年，大桥的建设重启。新的设计增加了大桥主要应力结构的横截面面积，几乎是之前的2倍。但是悲剧重演了。在经历了两次悲剧后，魁北克大桥最终在1917年完工通车。

Quebec Bridge across the lower Saint Lawrence River, Canada

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Spanning the soft sunlight. Quebec Bridge, Canada

The Quebec Bridge holds great significance in the history of Canadian civil engineering. This architectural marvel has a centre span of 549 metres, making it the longest cantilevered bridge in the world. At more than 20 metres wide, it can accommodate two sets of railway tracks, two sets of streetcars, and two roadways.

The bridge has a rich history, plagued with difficulties and challenges with construction. It took over thirty years to complete, with design flaws causing two major collapses in 1907 and 1916. However, The Quebec Bridge as we see it today opened in 1919 and remains a national historic site.