上海轨交22号线（崇明线）全线车站主体结构封顶

Core Points - The completion of the last slab pouring at the terminal station of Shanghai Metro Line 22 (Chongming Line) signifies the structural topping of all stations along the line [1] - The Chongming Line spans approximately 43 kilometers and includes 8 stations, marking it as Shanghai's first metro line crossing the Yangtze River [1] - The construction of the line overcame significant challenges such as long underwater tunnel excavation, high water pressure at the riverbed, and complex geological conditions [1] - Once operational, the line is expected to enhance the connectivity between Chongming, a world-class ecological island, and the Yangtze River Delta urban agglomeration, providing strong momentum for regional development [1]