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Bangkok cable-stayed bridge gets under way
Published: September 28, 2004
Construction has started on what will be Thailand’s longest cable-stayed bridge. Bangkok’s Chao Phraya River Bridge will have a 500m main span and twin side spans of 220.5m. It will carry eight lanes of traffic as part of a 20km motorway that will provide access to a new international airport. The bridge’s two A-shaped towers will combine traditional Thai and contemporary design. They will provide a symbolic gesture of welcome to visitors by giving a stylized representation of a traditional Thai greeting that includes steepling the hands are together. The deck superstructure consists of a pair of steel edge girders and floor beams at 4m spacing. Precast concrete deck and cast-in-place strips will be made composite to the steel frame. The design uses counterweight concrete to balance the bridge, in order to eliminate tie-down devices completely. Design was by Parsons Brinckerhoff, which will also be providing construction supervision and technical support services. The contractor is CH Karnchang. Completion is scheduled for 2007. |
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