The final segment of steel decking has been installed on the Danjiang Bridge, the first structure to link the east and west banks of the mouth of the Tamsui River in Taiwan, just north of Taipei.
The milestone confirms 12 May 2026 as the bridge’s opening date, when it will become the world’s longest single-tower, asymmetric cable-stayed bridge, with a 450m-long central span and a 200m-tall concrete mast.
Estimated to cost US$405m, the 68-month project is being delivered by a joint venture of Taiwan’s Sinotech Engineering Consultants and Germany’s Leonhardt, Andrä & Partner, with design by UK-headquartered Zaha Hadid Architects (ZHA).
ZHA says the bridge will cut congestion by 30% on the only other Tamsui River crossing, the Guandu Bridge, 5km upriver near Taipei.
In doing so, it will also remove a 10km inland detour by linking coastal expressways directly.
Spoiling the sunset?
The estuary is a popular spot for sunset watching, which is why ZHA chose a single-mast design – to support the span in high winds and earthquakes without completely spoiling the view.
ZHA used 3D mapping and modelling of the estuary to position the bridge. The height of its deck lets vessels pass underneath.
The bridge, which has dedicated cycle and pedestrian lanes, can be adapted to accommodate a future expansion of the Danhai Light Rail network.
Crews will now pave the deck and install lighting and noise barriers.
Structural load tests will be undertaken before the opening.
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