Millau Viaduct Millau Viaduct The Millau Viaduct (, ) is a cable-stayed bridge that spans the gorge valley of the Tarn near Millau in southern France. In a Franco-British partnership, it was designed by the English architect Lord Norman Foster and French structural engineer Michel Virlogeux. , it is the tallest bridge in the world, having a structural height of . The Millau Viaduct is part of the A75-A71 autoroute axis from Paris to Béziers and Montpellier. The cost of construction was approximately € 394 million. It was built over three years, formally inaugurated on 14 December 2004, and opened to traffic
Russky Bridge name. The bridge to Russky Island is the world's longest cable-stayed bridge, with a 1104 m long central span. The bridge also has the second highest pylons after the Millau Viaduct and the longest cable stays. The design of the bridge crossing has been determined on the basis of two primary factors: The piles were driven as deep as 77 m below ground and on the island side 120 auger piles were piled under each of the two 320 m high bridge towers. The pylons were concreted using custom self-climbing forms in pours of 4.5 m. A crane was used