Viaduc de Lanespède, Railway viaduct in Lanespède, France

The Lanespède Viaduct is a railway bridge with multiple arches that spans a river and motorway while connecting several communities. The structure rests on sturdy pillars and crosses the terrain at a considerable height.

Work on the viaduct began on 8 May 1865 and ended on 1 April 1867; the first train crossed it only in 1869, carrying Emperor Napoleon III to the camp de Lannemezan. No major accident occurred during the works, which the sources note as rare. It has been listed as a monument historique since 1984.

The 11,000 m³ of brick carry the stamp "Mine d'Orignac", a brickworks mark still legible on the masonry. The bricks reached the site in ox-drawn carts. The viaduct crosses three communes: it links south-east Lanespède to north-west Péré, passing briefly over Bégole.

The viaduct crosses the Lène and the former N117 road, now part of the A64 motorway, which passes beneath its arches. It links the south-east of Lanespède with the north-west of Péré, briefly crossing Bégole. The structure is visible from the roads running under and alongside it.

The 11,000 cubic metres of brick are stamped "Mine d'Orignac", the mark of the brickyard that supplied them. They reached the site in ox-drawn carts, and the works of 1865-1867 recorded no major accident, which the sources note as rare.