Core Points - The Jiuzhaigou-Mianyang Expressway (referred to as Jiuzhai Expressway) has a total length of 245 kilometers and is constructed as a dual four-lane highway with a design speed of 80 km/h and a bridge-tunnel ratio of 82.04% [1][2] - Once completed, the travel time from Chengdu to Jiuzhaigou will be reduced from 8 hours to approximately 4 hours, significantly improving regional transportation conditions and ending the historical lack of expressway access to Jiuzhaigou County [2] Construction Progress - As of September 3, the remaining 24.7 kilometers of asphalt pavement for the Jiuzhai Expressway has been completed, marking the overall completion of the main project, with expectations for the entire line to be operational before the National Day holiday this year [1] - The project has faced challenges due to complex geological conditions in the Longmen Mountain fault zone and Huya fault zone, as well as variable weather in high-altitude areas, leading to a short construction window [1] - Since the start of construction, a total of 131 bridges and 45 tunnels have been completed, with cumulative operational mileage reaching 220.3 kilometers across multiple segments [1]
主体工程全部完工 九绵高速预计国庆假期前全线通车
Si Chuan Ri Bao·2025-09-04 00:46