Core Viewpoint - The successful completion of the last concrete pour for the Tonghe Songhua River Grand Bridge marks a significant milestone for the Tieke Expressway project, facilitating subsequent construction phases and laying a solid foundation for the project's completion and opening to traffic [1][5]. Group 1: Project Details - The Tonghe Songhua River Grand Bridge spans a total length of 3,513 meters, consisting of five parts: the north approach bridge, embankment bridge, north main bridge, south main bridge, and south approach bridge [3]. - The main bridge features a maximum single-span of 160 meters, showcasing advanced engineering capabilities [3]. - The construction faced challenges such as large volume concrete work, flood prevention during rainy seasons, winter construction, deep-water operations, and high-altitude work [3]. Group 2: Construction Achievements - The construction team effectively managed the project timeline, utilizing favorable weather conditions and advanced equipment such as "intelligent rebar numerical control devices," "ultrasonic truss paving machines," and "prestressed overall threading vehicles" to enhance efficiency and quality [3]. - Over nearly three years, the project completed 444 drilled pile foundations, 220 pier columns, and 416 prefabricated box girders, using 200,000 cubic meters of concrete and 30,000 tons of rebar [3]. - The main bridge successfully completed the cantilever pouring of 412 segments, achieving the goal of bridge closure [3]. Group 3: Strategic Importance - The Tieke Expressway is a crucial link in the national expressway network, connecting Suifenhe to Manzhouli, and is an integral part of the "2866" planning network in Heilongjiang Province [5]. - The project's implementation is significant for promoting the revitalization of Northeast China, improving national and regional road network layouts, and fostering the development of advantageous resources along the route, contributing to coordinated economic and social development in the region [5].