Pont Boutiron, Historic reinforced concrete bridge between Creuzier-le-Vieux and Vichy, France.

Pont Boutiron is a road bridge over the Allier with three unequal spans of 67, 72 and 67 metres, built in lightly reinforced concrete. Its very flat three-hinged arches carry a thin deck through openwork triangular concrete ribs, and the parapets are precast concrete with a pierced pattern. A single broad pier stands in the water.

A first bridge at this site, built from 1854 to replace a ferry, was swept away by an Allier flood in 1856; a wooden-deck suspension bridge rebuilt in 1857 served until the concrete bridge opened. Eugène Freyssinet designed the reinforced-concrete bridge, built 1912–1913, as one of three bridges replacing problematic suspension crossings for the price estimated for the Veurdre bridge alone. It was inscribed as a monument historique in 2021.

The bridge marks an important moment in how engineers learned to build with concrete, introducing a new joint system that other builders would later copy. Visitors can see this innovation reflected in the way its three arches meet the supports.

The bridge carries the Route départementale D27 and is limited to vehicles weighing 3.5 tonnes or less. It connects the northern outskirts of Vichy with Charmeil and Vichy-Charmeil Airport on the left bank. In September and October 2012, it was closed to traffic for pier reinforcement work costing 315,000 euros.

While construction was underway in 1913, an unexpected river flood threatened the bridge while its concrete was still curing. The engineer had to develop quick solutions to keep the unfinished structure from being damaged.