On the Millau Viaduct, inverted Y-shaped pylons sit above the deck created by the bridge's structure. These pylons are oriented longitudinally as an extension of the piles on which the viaduct rests. The purpose of these metal structures is to anchor the upper part of the stay cables necessary to support the deck. At the front of each part of the viaduct, two partially guyed pylons are placed during jetting operations. Each pylon of the Millau Viaduct is equipped with a series of eleven pairs of stays, the cables of which support the deck.