Construction Engineering of Phu My Cable-Stayed Bridge, Vietnam

The Phu My Bridge spans the Saigon River between Districts 7 and 2 of Ho Chi Minh City (HCMC). The bridge forms part of a new ring road currently under construction around HCMC. The ring road will be an important transport link from the southern Mekong Delta region to the central and northern parts of Vietnam.

The Phu My Bridge contract includes the design and construction of a 705 m long cable-stayed main bridge with a clear span of 380 m, as well as the approach structures on either side being approximately 758 m on District 7 and 638 m on District 2.

The main span deck is 27 m wide. Clearance to river traffic is provided with a 45 m vertical clearance in a 250 m wide zone. The pylons carrying the deck are designed as an H frame and are approximately 140 m high.

The bridge was constructed by a joint venture between two companies and was completed in September 2009. This paper describes the construction engineering used during the stage by stage analysis of the bridge and the onsite role to control the cable forces and bridge geometry during construction of the bridge.