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1983年5月中国土木工程学会代表团应邀赴加拿大访问,途经美国,对美国桥梁建设进行简略考察,兹将其概况作一介绍,以供参考。美国幅员辽阔,河流纵横贯穿,大洋两岸海湾众多,建造了很多特大跨径桥梁。全国交通发达,公路有636.5万公里,其中6.92万公里为高速公路,桥梁之多,冠于世界。桥梁的结构型式,在大跨径桥梁中,钢桥占优势。中小跨径桥梁中,预应力混
May 1983 China Civil Engineering Society delegation was invited to visit Canada, via the United States to conduct a brief survey of the United States bridge construction, we will make an overview of its introduction for reference. The United States has a vast territory with numerous rivers running through it. There are many gulfs on both sides of the ocean and many large-span bridges have been built. There are 6,365,000 kilometers of highways in the country, with 69,200 kilometers of highways and bridges as many as one in the world. Bridge structure type, in the long-span bridge, steel bridge dominant. Small and medium-span bridges, prestressed mixed