Masangxi Bridge, Cable-stayed road bridge in Chongqing, China

Masangxi Bridge is a cable-stayed bridge over the Yangtze in Chongqing, linking Dadukou and Banan districts. Its 726.16 m main structure has a 360 m main span between two 179 m side spans, with a 30.6 m deck carrying six lanes. The approach viaduct is 9×40 m prestressed concrete T-beams, 28.6 m wide.

Work on the Masangxi Bridge began in October 1998 and it opened to traffic in December 2001. It was built as contract section C of the Chongqing–Zhanjiang national trunk road, with a 1,540.5 m approach-and-main structure. The bridge carries the co-aligned Chongqing Inner Ring Expressway and the G75 Lanzhou–Haikou Expressway between Dadukou and Banan.

The bridge carries the G75 Lanzhou–Haikou Expressway and the Chongqing Inner Ring Expressway on shared alignment, so its deck is a working freight and commuter corridor between Dadukou and Banan. Its name comes from Masangxi, the local place name on the river's bank. The 360 m main span is the element drivers notice as they cross.

The bridge forms part of the G75 Lanzhou-Haikou Expressway and carries thousands of vehicles daily across the river. Visitors can best view it from vehicles passing through or from nearby vantage points along the banks.

The deck is a floating-system cable-stayed design: the 360 m main span rests on cables rather than fixed piers at the girder, a detail visible from the banks. Its approach viaduct is a 9×40 m prestressed concrete simply supported T-beam run, 28.6 m wide against the main deck's 30.6 m.