Baluarte Bridge saddles in the pylons to form 152 suspenders in a two plane semi-fan layout. The tallest intermediate pier, P9, is high. It crosses a gorge in the Sierra Madre Occidental mountains with a clearance of below the deck, substantially taller than the Eiffel Tower. Its clearance is higher than that of the previous record-holder, France's Millau Viaduct, which has a clearance of . The bridge's central span, long, is also the longest cable-stayed span in North America, longer than that of the John James Audubon Bridge in St. Francisville, Louisiana. Construction on the bridge began on 21 February 2008. The
Richard de Millau the investiture quarrel between the papacy and the Emperor of the Holy Roman Empire between 1075 and 1122. Much of which revolved around the Provençal lands in the Kingdom of Burgundy, attached to the Holy Roman Empire. Born about 1052AD into an extremely powerful house at the time. His family were of viscounts of Millau, and their actions involved the continuity of power strategies between the various aristocratic families of France. He was the fourth child of Richard II (? - 1051), Vicount de Millau (1023) and his wife Gévaudan. His brother Bernat had been abbott of abbé de Saint-Victor