My Thuan 2 Bridge begins at Km101+126, linking to the Trung Luong-My Thuan Expressway Project (An Thai Trung intersection, Cai Be district) and ends at Km107+740, connecting to the My Thuan-Can Tho Expressway Project (intersection of National Highway 80, Vinh Long City, Vinh Long Province). The bridge runs parallel to National Highway 1 and crosses the Tien River 350m upstream of the existing My Thuan bridge, which is built to carry 100km/h traffic. This is the country's first cable-stayed bridge, which was designed, managed, and built entirely by Vietnamese firms.
The formwork system selected for the My Thuan 2 bridge project is a combination of the hydraulic climbing system for the outer formwork and the shaft platform climbed by a tower crane for the inner formwork. With a main platform 2500mm wide and a loading capacity of 250 kg/m2, the formwork system gives workers a large space and absolute safety when working at height. The design process of the formwork system and construction methods are studied and closely coordinated between Utracon engineers and the main contractor to meet the 7-day/typical casting step requirement.
Main bridge: 28m wide with 6 lanes
Total length: 2330m (combine super-T, BC box girder and stay-cable system)
Main span: (150+350+150) m
Approach bridge: 16m wide with 4 lanes
Pylon: 125m x 2 diamond shape pylons
Approach span:
• Tien Giang side: (13@40+37.5) m super-T
• Vinh Long side: (40+63+40) m box girder & (37.5+8@40+30+4@40) m super-T
Utracon’s scope of work:
• Supply of 2 sets of Auto Climbing System (ACS)
• Shop drawings and Design Calculations
• Supply of supervisors for assembly and installation of ACS