Suspension bridge over the Allier at Parentignat, Suspension bridge in Parentignat, France
The Pont suspendu sur l'Allier à Parentignat is a metal suspension bridge that crosses the Allier river between Parentignat and Issoire, in the Puy-de-Dôme department. Its central span hangs from steel cables supported by towers on each bank, with smaller brick and stone arches framing each approach.
The bridge was built in 1830, at a time when engineers were testing new ways to span wide rivers using metal rather than stone or wood. It carried vehicles and people until 1976, when a new road bridge was built nearby, and it was listed as a historical monument in 1975.
The bridge draws visitors who want to see how 19th-century engineers solved the challenge of crossing a wide river with metal rather than stone. Walking across it, you can feel a slight sway, a direct reminder of how suspension bridges of that era were designed to move with load and wind.
The bridge is now closed to vehicles and can only be viewed on foot from the banks of the Allier, where both the metal cables and the stone arches are clearly visible. The area around the riverbanks can be uneven, so comfortable shoes are a good idea, especially after rain.
Unlike most suspension bridges, the cables here are not made from a single twisted wire rope but from individual steel bars linked together at joints, some in pairs and others in groups of four side by side. Apart from reinforcement work on the walking surface, the bridge has remained almost entirely unchanged since it was built.
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