Pont de Poissy, Metal and concrete bridge across Seine River in Poissy, France.
The Pont de Poissy is a steel and concrete bridge spanning the Seine between Poissy and Carrières-sous-Poissy. The structure provides clear passage for river traffic while supporting road vehicles across its main span.
The old bridge was deemed unfit for road traffic in 1938 and was destroyed by American bombing in 1944. In 1948 the project for a metal bridge 300 metres upstream was approved, and construction took three years, with two concrete bases 19 metres long and 6.5 metres wide welded to 48 reinforced concrete piles. In 2018 new expansion joints and a new road surface were installed.
The bridge connects two communities and shapes the river valley landscape with its modern steel design. It remains part of everyday local life, showing how the region rebuilt itself after wartime destruction.
The bridge is open daily to pedestrians, cyclists, and motor vehicles, offering direct crossing of the river. Access is unrestricted from both riverside neighborhoods.
Each of the two piers stands on a concrete base 19 metres long and 6.5 metres wide, welded to 48 reinforced-cement piles. One pier also carries a hydrographic station that measures the Seine's water level at Poissy.
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