The Égratz Viaduct is a curved concrete box girder bridge in south-east France, in the French Alps, near Switzerland and Italy. The bridge is almost one-mile long.
Wikipedia https://en.wikipedia.org/wiki/Égratz_Viaduct
Address Viaduc des Égratz, 74190, France
Coordinates 45°55'33.887" N 6°43'54.808" E