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The Millau Viaduct (French: le Viaduc de Millau) is a large cable-stayed road-bridge that spans the valley of the River Tarn near Millau in southern France. Designed by the structural engineer Michel Virlogeux and British architect Norman Foster, it is the tallest vehicular bridge in the world, with one mast's summit at 343 metres (1,125 ft) — slightly taller than the Eiffel Tower and only 38 m (125 ft) shorter than the Empire State Building. The viaduct is part of the A75-A71 autoroute axis from Paris to Béziers. It was formally dedicated on 14 December 2004, inaugurated the day after and opened to traffic two days later. The bridge won the 2006 IABSE Outstanding Structure Award.

The bridge’s construction broke three world records:

• The highest pylons in the world: pylons P2 and P3, 244.96 metres (803 ft 8 in) and 221.05 metres (725 ft 3 in) in height respectively.
• The highest mast in the world: the mast atop pylon P2 peaks at 343 metres (1,125 ft).
• The highest road bridge deck in the world, 270 m (890 ft) above the Tarn River at its highest point.