南京长江第四大桥确定为悬索桥桥型。在4种悬索桥方案中,九成以上专家赞同长江四桥选用主跨1420m的双塔悬索桥(三跨)。山东省交通厅的设计大师李守善说,主跨1420m的悬索桥,具有三个跨度,桥身不长,但很大气,非常具有韵律美。如果南京四桥采用这一桥型的话,将是一座跨径1420m的三 Nanjing Yangtze River Bridge No. 4 identified as suspension bridge type. Among the four suspension bridge schemes, over 90% of the experts agree on the use of a two-tower suspension bridge (three-span) with a main span of 1420m at the Fourth Bridge of the Yangtze River. Li Shoushan, master of design of Shandong Provincial Communications Department, said that the main span of 1420m suspension bridge has three spans, the bridge is not long, but the atmosphere is very rhythmic. If Nanjing Bridge uses this bridge type, it will be a span of 1420m three