The 220m arch bridge was completed in 1902 under the direction of Paul-Joseph Bodin.  The single track viaduct is located along the Carmaux-Rodez rail line. Built by the Société de Construction des Batignolles, it was the longest metallic arch span built up to that point in time. The viaduct contains an estimated 3800 tons of metal, with a total cost (including the masonry abutments) of around 2 700 000 French francs. 
- Mahmoud, Khaled (Editor) (Sep 12, 2013). Durability of Bridge Structures: Proceedings of the 7th New York City Bridge Conference, 26-27 August 2013. CRC Press. ISBN 978-1-138-00112-1. Retrieved July 31, 2014.CS1 maint: Extra text: authors list (link)
- Godfernaux, R. (1903). Le viaduc du Viaur (ligne de Carmaux à Rodez) [The Viaur Viaduct (Carmaux to Rodez rail line)] (PDF) (in French). Bruxelles: J. Goemaere. Retrieved July 31, 2014.
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