Viaduc de la Roizonne

The Viaduc de la Roizonne is a railway bridge that extends 260 meters across the landscape while standing 110 meters high above the ground. Its design uses a series of arches, with a large semicircular arch forming the main span and smaller arches supporting the sections above.

The bridge was completed in 1916 and showcases the engineering techniques of architect Paul Séjourné, who designed it with multiple arches to handle the challenging terrain. Its construction was part of France's broader effort to bring railway connections to mountain regions.

The structure emerged from France's effort to connect mountainous regions by rail, showing how engineers tackled the challenge of crossing deep valleys with stone and steel.

The viaduct stands about 2 kilometers east of La Mure and can be viewed from a nearby road that passes below or near the structure. The best time to visit is during clear weather, when the bridge's form stands out clearly against the sky.

This structure is part of a group of five high railway bridges in the La Mure area, a rare cluster that shows different approaches to engineering challenges in steep valleys. Visitors who explore all of them can trace how bridge design evolved and adapted to difficult terrain.

Location: La Mure

Architects: Paul Séjourné

Height: 110 m

Length: 260 m

GPS coordinates: 44.91411,5.82914

Latest update: December 14, 2025 16:44