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杭州湾跨海大桥北起浙江嘉兴海盐郑家埭,南至宁波慈溪水路湾,全长36Km,其中海上部分桥梁长35．673Km。双向六车道高速公路,宽33m。设计时速100Km、使用年限100年,现为世界上最长的跨海大桥。大桥设北、南两个航道,各有一主两副航道组成。北通航孔的主跨448m,净高47m,为钻石型双塔双索面钢箱梁斜拉桥,主航道净宽325m,通航标准为3．5万
Hangzhou Bay Bridge north of the sea from Jiaxing, Zhejiang Haiyan Zheng Jia, south to Ningbo Cixi Waterway Bay, a total length of 36Km, of which the sea part of the bridge 35.673Km long. Two-way six-lane highway, 33m wide. Design speed 100Km, the useful life of 100 years, is now the world’s longest bridge across the sea. Bridge located north and south two waterways, each with one main two waterways. North Main navigation hole of the main span of 448m, a net high of 47m, for the double-tower diamond double-girder cable-stayed bridge, the main fairway net width 325m, navigable standard 35000