又一国内之最！丹江小三峡特大桥通车

Core Viewpoint - The completion and opening of the Danjiang Xiaoshanxia Grand Bridge marks a significant milestone in the Henan-Mianxi Expressway project, enhancing connectivity and reducing travel time in the region. Group 1: Project Overview - The Henan Mianxi Expressway segment from Xichuan to the Hubei-Yu Province border has been completed and is now operational, featuring a total length of 24.838 kilometers [1] - The key engineering feature, the Danjiang Xiaoshanxia Grand Bridge, spans 919 meters with a main span of 536 meters, located within the Danjiangkou Reservoir area [1] Group 2: Engineering Achievements - The expressway includes two significant crossings over the Danjiangkou Reservoir, achieving two notable records: the world's largest span of a partially anchored mixed beam cable-stayed bridge and the largest span of a separated mixed beam cable-stayed bridge in China [6] Group 3: Impact on Travel and Economy - The travel time from Xichuan, Henan to Shiyan, Hubei will be reduced from 1 hour and 40 minutes to approximately 50 minutes, significantly alleviating travel difficulties for the three million residents in the Danjiangkou Reservoir area [10] - The new expressway opens up new channels for industrial development and the flow of people and goods among the provinces of Shaanxi, Henan, and Hubei [10]