SRBC(SH:600039) Xin Lang Cai Jing·2025-12-27 22:48Core Viewpoint - The Chengnan Expressway expansion project, the largest of its kind in Sichuan, aims to alleviate traffic congestion and enhance transportation efficiency between Chengdu and Nanchong, with an expected completion by the end of the year [2][3]. Group 1: Project Overview - The Chengnan Expressway expansion project spans 240.226 kilometers with a total investment of 36.807 billion yuan and a construction period of three years [2]. - It is the first expressway in the Chengyu economic circle to expand to eight lanes, designed for speeds of 100 to 120 km/h, significantly improving travel times [3]. Group 2: Construction Challenges and Innovations - The project faced challenges such as complex geological conditions and high-altitude construction, which were addressed through innovative technologies, including a digital non-track triangular hanging basket that reduced construction time significantly [4]. - The widening technique employed aims to maximize land use while ensuring safety during construction, with measures like movable steel guardrails and dedicated traffic management teams [4]. Group 3: Cultural and Aesthetic Enhancements - The project incorporates local cultural elements into its design, moving away from traditional greening methods to create a landscape that reflects regional heritage [5][6]. - Specific cultural symbols from cities along the route are integrated into various structures, enhancing the aesthetic appeal and creating a connection between historical and modern elements [6].