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昆明南连接线公路工程公路全长约25 km,是《国道主干线系统规划布局方案》中“五纵一横”公路主骨架网络中的重要组成部分,也是昆明主城区网络规划重点道路之一。该工程的建设与运营,对昆明地区的经济开发、交通条件改善、对外经贸发展、公路网建设完善等,都有着巨大的促进作用。大冲立交桥是昆明南连接线交通基础设施建设的标志性工程,主要包括主线桥和连接匝道,其中主线桥全长794.6m,连接匝道全长618 m。与普通道路不同,桥梁上沥青铺层
Kunming South Link Highway highway length of about 25 km, is “national trunk road system planning and layout plan,” “five vertical and one horizontal” highway main skeleton network is an important part of the main urban network planning is also a key road one. The construction and operation of the project have a tremendous contribution to the economic development of Kunming, the improvement of traffic conditions, the development of foreign trade and economic cooperation and the improvement of the road network. Dacong Overpass is a landmark project for the construction of transport infrastructure in Kunming South Link, including the main bridge and connecting ramps. The main bridge is 794.6m in length and the connecting ramp is 618m in length. Unlike ordinary roads, asphalt paved on the bridge