世界在建最长高铁桥梁进度刷新 跨京杭运河斜拉桥顺利合龙

Group 1 - The Tongtai Yangtze Bridge, measuring approximately 172.9 kilometers, is currently the longest high-speed rail bridge under construction in the world, connecting the cities of Nantong, Taizhou, and Yangzhou along the northern bank of the Yangtze River [2] - The bridge construction involves overcoming significant challenges, including crossing existing railways, highways, and waterways 116 times, with the recently completed cable-stayed bridge over the Grand Canal being a key technical milestone [2] Group 2 - The Huhang-Chongqing Railway is a crucial part of the national "Eight Vertical and Eight Horizontal" high-speed rail network, spanning about 2,100 kilometers with a design speed of 350 kilometers per hour, linking six provinces and municipalities [3] - Once completed, the railway will complement the Yangtze River water transport, optimizing the comprehensive transportation system in the Yangtze River region and contributing to the high-quality development of the Yangtze Economic Belt [3]