Timeline

Heritage classified

Key figures

Origin and history

The suspension bridge of Saint-Ilpize, situated on horseback in the communes of Saint-Ilpize and Villeneuve-d'Allier (Haute-Loire), was built in 1863 under the direction of engineer Jollois, upon request of the prefect. It belongs to the third generation of suspended bridges, using the technique of slashes developed after 1850. This type of work, which appeared in 1818 in England, illustrates the evolution of metal construction techniques in the 19th century. The bridge crosses the Allier River and remains one of the four suspension bridges still existing in the Haute-Loire.

In 1879, Jollois joined forces with Ferdinand Arnodin, a renowned metal manufacturer, to finalize the project. Arnodin brings a major innovation: the twisted suspension cable, a technique that he will subsequently reuse for other bridges around the world. The bridge, located on departmental road 22, was listed as historic monuments by order of 2 October 2015, thus recognizing its heritage and technical value.

On 15 July 2004, the bridge was banned from traffic after damage caused by an overloaded truck, affecting its deck. It has since been reopened with height restrictions, thus preserving its use while ensuring its conservation. This monument reflects both the progress of 19th century engineering and the contemporary challenges of preserving industrial heritage.

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