The Millau Viaduct Opens to Traffic
CONFIRMED78% CONFIDENCEHappened as dated, per the source[1]: the viaduct "was inaugurated on 14 December 2004" and "goes into service" on December 16, 2004.
Norman Foster's Millau Viaduct, the tallest bridge in the world, opened over southern France's Tarn valley, completing the A75 motorway route between Paris and the Mediterranean.