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保山—龙陵高速公路是中国跨越横断山脉的第一条高速路,其前身是被称之为无比艰险的滇缅公路与原320国道的一段,沿线地质情况特殊而复杂,名不虚传:山高谷深,下怒江峡谷,上高黎贡山,30.9公里的连续长下坡高差达1261米;桥隧长度达37.6公里,占全线总长的49.3%,平均每公里有一座大中桥梁,每5.4公里有1座隧道,可谓桥隧相连、隧隧相望。从海拔最高处镇安到最低处潞江坝,平均每公里下降40米,相当于14层楼的高度。全线共
The Baoshan-Longling Expressway is China’s first high-speed road spanning the Hengduan Mountains. Its predecessor was a section of the incomparable Dian Burma Road and the original 320 State Road. The geological conditions along the route are special and complex, , Under the Nu River Valley, the Gaoligongshan, 30.9 km long continuous downhill height of 1261 meters; bridge and tunnel length of 37.6 kilometers, accounting for 49.3% of the total length of the line, an average of every kilometer there is a bridge, every 5.4 km 1 Block tunnel, bridge and tunnel can be described as connected, tunnels across the board. From the highest point of the town to the lowest point of Lujiang dam, an average drop of 40 meters per km, equivalent to 14 floors of height. Total line