张官高速洞庭溪沅水特大桥顺利合龙

Core Viewpoint - The successful completion of the Dongting Creek Yuan River Grand Bridge marks a significant milestone for the Zhangguan Expressway, ensuring timely operation and enhancing regional connectivity [1] Group 1: Project Overview - The Dongting Creek Yuan River Grand Bridge, located in Yuanling County, Huaihua City, spans 1,707 meters and is a critical control project for the Zhangguan Expressway [1] - The main bridge features an 800-meter span double-tower single-span suspension design, making it the largest suspension bridge under construction in Hunan Province [1] Group 2: Construction Achievements - The project commenced in September 2022 and has overcome complex geological conditions and ecological protection requirements [1] - The construction team implemented a "design-manufacture-procurement-construction" integrated production model, establishing a collaborative mechanism across the entire industrial chain [1] - Intelligent construction technologies were employed to efficiently promote green building practices [1] Group 3: Economic Impact - The Zhangguan Expressway will directly connect the three major tourism economic circles of Zhangjiajie, Huaihua, and Xiangxi, creating a vital transportation artery to ASEAN ports [1] - The expressway is expected to reduce travel time from the Wuling Mountain area to the Yangtze River Economic Belt by two hours, significantly contributing to regional coordinated development [1]