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CHENGDU WEST FIRST BRIDGE, CHINA ZAHA HADID ARCHITECTS (ZHA)


Zaha Hadid Architects (ZHA) was commissioned to build the first in a series of bridges on Chengdu’s West Line Road; the 295 metre Chengdu West First Bridge. It crosses the Jiangxi River, a tributary of the Tuojiang River in China’s Sichuan province. With its 185 metre central span and 55 metre secondary span reaching to the riverbanks, the Chengdu West First Bridge is a road, cycle and pedestrian bridge enabling the West Line Road to become the western section of the Airport New Town ring-road and cycle route. The bridge is composed of two symmetrical primary steel arches that rise to 30 metres from either side of the road deck, which lean together as they rise to “touch tangentially at their crown,” stabilising the structure from lateral wind forces. The curvature of the bridge’s supporting piers and abutments taper into its primary arches and road deck, “defining a sculptural landmark within Chengdu’s transport infrastructur,” said ZHA. The practice used structural analysis software on the design’s digital model to ensure the structure and foundations are designed to exceed the standards required for once-in-200-year weather events.


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ADF SEPTEMBER 2023


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