上海南北通道新建工程开工，将成世界最长中心城区地下连续流道路

Core Viewpoint - The construction of the North-South Passage in Shanghai has officially commenced, aiming to enhance the urban traffic network and support regional development through improved connectivity and traffic flow [2][5]. Group 1: Project Overview - The North-South Passage will span 14.55 kilometers, starting from the Zhonghuan Dabaishu Interchange and ending at the intersection of Yanggao South Road and Chengshan Road, forming a crucial part of Shanghai's "grid" traffic system [1]. - The project includes the construction of the Pu Xi section and the cross-river section, totaling approximately 6.35 kilometers, featuring major infrastructure such as the Dabaishu Interchange renovation and a main tunnel from Zhongshan North Road to Binjiang Avenue [3]. Group 2: Traffic Impact - The new passage is expected to significantly alleviate traffic pressure on the parallel North-South Elevated Road, thereby enhancing the overall traffic efficiency of the central urban road network [5]. Group 3: Engineering Challenges and Innovations - The North-South Passage is set to become the world's longest underground continuous flow road in a city center, facing numerous global engineering challenges [7]. - The project emphasizes sustainable development through green construction practices, including the use of prefabricated technology and eco-friendly materials to minimize ecological disturbance [7].