The tallest road bridge in the world has been inaugurated in southwestern France by President Jacques Chirac. 

The Millau motorway viaduct stands 343 metres at its highest point, 23 metres taller than the Eiffel Tower, and crosses the valley of the River Tarn for a distance of almost 2.5 kilometres. 

It was designed by the British architect, Norman Foster, and will remove one of the country's most notorious bottlenecks when it opens to traffic on Thursday.