江阴大桥段位于G2京沪高速1055km+895m—1061km+71m,全长5.176公里,北接G40沪陕高速,南接G42沪宁高速,是G2京沪高速的咽喉要道,也是长三角高速路网中最重要的过江通道之一。近年来,随着社会经济发展,江阴大桥的通行量以每年9%的幅度增长,2017年日均流量8.2万辆,周末流量9万辆,节假日小客车免费通行期间单日高峰流量更是突破14万辆,超出设计流量5万辆180%。超饱和的车流 The section of Jiangyin Bridge is located at 1055km + 895m-1061km + 71m of Beijing-Shanghai Expressway with a total length of 5.176 kilometers. It connects G40 Shanghai-Shaanxi Expressway in the north and G42 Shanghai-Nanjing Expressway in the south. It is also the throat of G2 Expressway and the Yangtze River Delta Expressway One of the most important crossing roads in the road network. In recent years, with the social and economic development, the traffic volume of Jiangyin Bridge has increased by 9% per annum. In 2017, the average daily traffic volume is 82,000 vehicles and the weekend traffic volume is 90,000. The single-day peak traffic during the free passage of holiday passenger cars is a breakthrough 140,000, exceeding the design flow of 50,000 180%. Super-saturated traffic