久马高速再通87.5公里 4小时 从成都飙拢红原大草原

Core Viewpoint - The opening of the Jiuma Expressway significantly reduces travel time between Chengdu and Hongyuan Grassland, enhancing regional connectivity and promoting local tourism and agriculture [3][4]. Group 1: Project Details - The newly opened section of the Jiuma Expressway includes 23.6 kilometers from Aba Interchange to Anqiang Service Area and 63.9 kilometers from Haizishan Parking Area to Zhongrangkou Interchange, totaling 87.5 kilometers [3]. - The Jiuma Expressway is the first high-altitude ecological demonstration expressway in Sichuan, with an average elevation exceeding 3,300 meters and a total length of 219 kilometers [4]. - The project has a total estimated investment of 30.2 billion yuan, with a bridge-tunnel ratio of 42% [4]. Group 2: Impact on Travel and Environment - Travel time from Chengdu to Qinghai Jiuzhi will be reduced from 8.5 hours to 5.5 hours upon full completion of the expressway [4]. - The project addresses various technical challenges related to ecological protection, including the treatment of wetland soft soil and the prevention of deformation in soft rock tunnels [3]. Group 3: Current Status and Future Plans - As of now, a total of 186 kilometers of the Jiuma Expressway have been completed, with 50 kilometers from the Sichuan-Qinghai border to Aba Toll Station and 48.5 kilometers from Zhongrangkou Interchange to Wangjiazhaizai Interchange [3]. - The remaining 33 kilometers are expected to be completed by 2027 [3].