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Le viaduc de Garabit est un viaduc ferroviaire français permettant le franchissement des gorges de la Truyère. Il est situé dans le département français du Cantal dans la région d'Auvergne-Rhône-Alpes.
Ce viaduc est un projet de l'ingénieur des ponts et chaussées Léon Boyer, qui en confie la finalisation et la réalisation à Gustave Eiffel et sa société. Le chantier de construction, ouvert en janvier 1880, se termine en septembre 1884. Cet ambitieux ouvrage métallique, long de 565 m, culmine à 122 m au-dessus de la rivière et est alors le « plus haut viaduc du monde ». Finalement, son arche était, jusqu'en 1886, celle ayant la plus grande portée au monde.

The Garabit viaduct is a railway arch bridge spanning the Truyère river, Cantal, France, in the mountainous Massif Central region.
The bridge was constructed between 1882 and 1884 by Gustave Eiffel and was opened in 1885. It is 565 m (1,854 ft) in length and has a principal arch of 165 m (541 ft) span.
By the late 1870s, Eiffel & Cie, the company founded by Eiffel in partnership with Théophile Seyrig, had established a place among the leading French engineering companies. Between 1875 and 1877, the company had built the Maria Pia Bridge over the Douro at Porto, and when the construction of a railway between Marvejols and Neussargues, both in Cantal, was proposed, the work of constructing a viaduct to cross the Truyère was given to Eiffel without the usual process of competitive tendering. That was at the recommendation of the state engineers since the technical problems involved were similar to those of the Maria Pia Bridge. Indeed, it was Eiffel & Cie's success with that project that had led to the proposal for a viaduct at Garabit.

Tags:   France Landscape paysage Architecture

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