广绵扩容项目黑龙滩特大桥顺利实现双幅合龙

Core Viewpoint - The successful completion of the key control project, the Heilongtan Grand Bridge, marks a significant milestone for the Guangmian Expansion Project, which aims to enhance the Jingkun Expressway and is crucial for the transportation network in Sichuan Province [1] Group 1 - The Guangmian Expansion Project is part of the national expressway network, specifically the Jingkun Expressway, which serves as a vital north-south artery [1] - The project includes a total of 8 continuous rigid frame bridges, all of which have now been completed, supporting the goal of full operation by 2026 [1] - The Guangmian Expansion Project is identified as a core passage for traffic flow from Sichuan Province to northern regions [1]