上海地铁崇明线全线隧道贯通 系国内穿越长江最长地铁

Core Points - The completion of the last tunnel section of the Shanghai Metro Line 22 (Chongming Line) marks a significant milestone, achieving full tunnel connectivity after 208 days of continuous excavation [1][3] - The Chongming Line spans 42.232 kilometers, connecting key areas including Pudong, Changxing Island, and Chongming Island, with a total of 8 underground stations [1][3] Industry Significance - The Chongming Line serves as a rapid transit link between Chongming District and central Shanghai, enhancing development momentum in Chongming and improving the overall Shanghai metro network [3] - The construction of this line is crucial for supporting integrated transportation development in the Yangtze River Delta region [3]