Construction of the Nhat Tan Bridge Superstructure

Abstract

The main bridge of Nhat Tan Project is a six span continuous cable stayed bridge under construction in Hanoi, Vietnam. On completion, the 1500 m bridge will be the longest cable stayed bridge in Vietnam, with 4 main spans and 2 side spans of lengths 300 and 150 m respectively. The bridge will have 8 traffic lanes and has a total deck width of 35.6 m. The superstructure of the bridge consists of a composite girder and New Parallel Wire Strands (New PWS) stay cables with a total of over 14,500 metric tons of steel, 37,500 metric tons of reinforced concrete deck slab and 1800 (220 Nos.) metric tons of prefabricated stay cables. This paper details the limitations faced in development of a construction method to ensure the safe, efficient and expeditious construction of the superstructure. In addition, it describes the innovations made to overcome challenges that arose during the implementation of the construction method.