The Shanghai Yangtze River Tunnel and Bridge , is the collective name given to the bridge-tunnel complex across the south fork of the Yangtze River near the river mouth in Shanghai. The Shanghai Yangtze River Tunnel connects Pudong District of Shanghai on the south bank of the river with Changxing Island. The Shanghai Yangtze River Bridge connects Changxing Island with island-county of Chongming further north. Together along with the Chongming-Qidong Yangtze River Bridge which crosses the north fork of the river, the Shanghai Yangtze River Tunnel and Yangtze River Bridge, form the last crossing of the Yangtze before the river empties into the East China Sea.
The total combined length of the bridge-tunnel complex is 25.5 km (15.8 mi). The bridge was built from 2005 to 2009 at a cost of 12.6 billion yuan (US$1.84 billion), and opened on October 31, 2009. The tunnel and bridge are part of the G40 Shanghai–Xi'an Expressway. The crossing of the Yangtze was complete with the opening of the Chongming-Qidong Yangtze River Bridge on December 24, 2011.
The Shanghai Yangtze River Tunnel starts on the south bank of the Yangtze at Wuhaogou, Pudong and ends in the south of Changxing Island. It is 8.9 kilometres (5.5 mi) in length, and has two stacked levels. The upper level is for a motorway, and has three lanes in each direction, with a designed speed of 80 kilometres per hour (50 mph). The lower level is reserved for a future Shanghai Metro line.