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昆明南过境高架公路,是为迎接世界园艺博览会召开,改善昆明市交通条件而进行的七项路网枢纽建设项目之一。东起昆明关上石虎关,西至大观河桥东岸,沿国道320线昆明过境段上空修建,全长7.2公里。工程由省公路规划院、省公路局、北京建达道桥咨询公司设计:采用双柱式高架,设上下行六个车道,荷载汽车-20、挂车-100,净高5.5米,行车速度100公里/小时。桥下原干道
Kunming South Transit Elevated Highway is one of seven road network hub construction projects to meet the World Horticultural Exposition held to improve traffic conditions in Kunming. Kunming East off Shih Guan, west of Grand River Bridge east coast, along the State Road 320 Kunming transit over the construction section, a total length of 7.2 km. The project is designed by Provincial Highway Planning Institute, Provincial Highway Bureau and Beijing Jian Da Dao Qiao Consulting Company. It adopts double-column type overhead crane with six lanes up and down, load car -20, trailer -100, net height 5.5 meters, driving speed 100 Km / h Under the bridge the original trunk road