Pont de Vierzon, Railway bridge in Orléans, France

Pont de Vierzon is a 455-metre railway bridge over the Loire between Orléans and Saint-Jean-le-Blanc, on the Aubrais–Montauban line. It has twelve arches, eleven with a 42-metre opening and one of 11 metres, and is 8.20 metres wide. Its light grey concrete deck carries overhead-line gantries and a white balustrade; the piers rise from the water, some marked with blue graffiti and circular recesses.

The original structure from 1843 was destroyed during World War II bombardment in 1944. The current bridge was rebuilt on the same site in 1947 to replace the damaged predecessor.

The railway bridge stands within the Loire Valley UNESCO World Heritage site, representing the region's industrial and transportation development.

The bridge can be accessed from different approaches and is visible from both sides of the river. Visitors can best observe the structure from the riverbanks or from trains that pass over it.

The 1846 Loire flood destroyed two masonry piers during construction, so the line opened on 19 July 1847 over a temporary wooden bridge. The definitive masonry structure was later rebuilt in 1947 after bombing. Look for the circular recesses on the pier faces and the blue graffiti on the piers rising from the water.