On May 28, 2020, the Mile-Yuxi Expressway ushered in the latest progress. After completing all the preparatory work, the Dengloushan Tunnel was officially started. The tunnel is a key control project of the Miyu Expressway. The single-lane tunnel is 10.9 kilometers long and the double-lane is 21.8 kilometers long. It is the longest highway tunnel currently under construction in Yunnan Province.

Denglou Mountain Tunnel is located in Panxi Town, Ningzhou Street of Huaning County. The line is east-west. It is a split, two-way six-lane extra-long tunnel. The length of the left line is 10.990Km and the length of the right line is 10.922Km. There are 27 pedestrian passages, 13 vehicle passages and 4 substation passages in the tunnel. The planned construction period is 48 months. It is a control project for the entire line of the Miyu Expressway.

Denglou Mountain Tunnel is the longest six-lane tunnel under construction in Yunnan Province. Denglou Mountain is the second highest mountain in Huaning County with a maximum altitude of 2491 meters. The geological conditions of the tunnel are particularly complex and the construction period is very long. It is decisive for the penetration of the entire line. effect. The progress of the Denglou Mountain Tunnel determines the opening of our entire highway and the time for completion and acceptance.

Miyu Expressway is the connecting line of Guangkun Expressway, with a total length of 115.42km and an estimated total investment of 23.051 billion yuan. Among them, the total length of the section in Huaning is 42 kilometers, the estimated investment is 8.4 billion yuan, and it is constructed according to the standard of a two-way six-lane highway with a design speed of 100 kilometers per hour.

The start of the Denglou Mountain Tunnel marks a new stage in the construction of the Miyu Expressway. After the completion of the Miyu Expressway, the link between Mile and Yuxi will transform Huaning ’s traffic disadvantage into a traffic advantage, from the tip to the front, which will accelerate the development of the central Yunnan economy. It is of great significance to develop and improve the layout of the expressway network in Yunnan. Editor / Zhao Jing