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),^[1] and opened on 31 October 2009.^[1][2]

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 24 December 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,^[1] 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.

The tunnelling was completed using two of the largest tunnel boring machines (TBMs) ever built. The TBMs were 15.43 metres (50.6 ft) in diameter, 135 metres (443 ft) long, and weighed 2,300t.^[3]

The Shanghai Yangtze River Bridge starts at the tunnel exit, crosses Changxing Island at ground level, then crosses to Chongming Island, ending at Chenjia Town.

It consists of two long viaducts with a higher cable-stayed section in the middle to allow the passage of ships. The total length is 16.63 kilometres (10.33 mi), of which 6.66 kilometres (4.14 mi) is road and 9.97 kilometres (6.20 mi) bridge. The overall shape of the bridge is not linear but slightly sigmoid ("S" shaped).

The central cable-stayed span is about 730 metres (2,395 ft), the longest span of any bridge in Shanghai, and the tenth longest cable-stayed span in the world.^[4] The span arrangement is 92+258+730+258+72 m.^[5]

The bridge has three road lanes in each direction, with a designed speed of 100 kilometres per hour (62 mph). Room on both flanks of the bridge is reserved for a future metro line, so total deck width is 35.3 m (115.8 ft).^[5]