The Garabit viaduct is a railway arch bridge spanning the Truyère, near Ruynes-en-Margeride, Cantal, France, in the mountainous Massif Central region.
The bridge was constructed between 1882 and 1884 by Gustave Eiffel, with structural engineering by Maurice Koechlin, and was opened in 1885. It is 565 m in length and has a principal arch of 165 m span.
Wikipedia https://en.wikipedia.org/wiki/Garabit_viaduct
Address D909, 15320, France
Coordinates 44°58'28.448" N 3°10'39.277" E