Group 1 - The 312 National Road East Extension project has successfully completed the structural connection of the entire elevated section, transitioning to the bridge deck construction phase [1] - The project spans approximately 2 kilometers, starting from the boundary between Nanjing's Qixia District and Zhenjiang's Jurong City, and ending at the already constructed sections of the 312 and 346 National Roads [1] - The last steel beam installed is a research segment that utilizes a new high-performance steel-concrete composite structure, enhancing strength, lightweight design, and durability [1] Group 2 - The overall assembly rate of the elevated bridge is as high as 90%, with core components such as columns and beams prefabricated in factories and assembled on-site, improving construction efficiency by over 30% [2] - The completion of the project will significantly reduce travel time from the Xianlin area of Nanjing to downtown Zhenjiang from 90 minutes to approximately 40 minutes [2] - The project is strategically important for enhancing connectivity between Nanjing and Zhenjiang, facilitating industrial collaboration and talent exchange, and injecting new vitality into the integrated development of the two regions [2]