MILLAU, France (Reuters) -- President Jacques Chirac has inaugurated the world's highest bridge, a creation taller than the Eiffel Tower, longer than the Champs Elysees and designed to end a traffic bottleneck in southern France. Conceived by British architect Norman Foster, the slender white viaduct in the picturesque Tarn Valley will provide a new motorway link between Paris and the Spanish border, easing congestion in the Rhone valley during the busy summer months. Chirac unveiled a simple commemorative plaque Tuesday before plunging into a throng of white helmeted construction workers, as an air display team flew past the bridge trailing...