Drivers have now been crossing the Millau Viaduct in Southern France for 10 years.
The structure, which is taller than the Eiffel Tower, was opened to great fanfare on 16 December 2004.
Institution of Civil Engineers president professor David Balmforth said this week: “The Millau Viaduct is truly awe inspiring - a fantastic example of civil engineering at its best. It not only provides a vital link between France and Spain, but captures the imagination of millions as it rises from the Massif Central valley floor and reaches majestically up through clouds, as if it is floating.
“Its construction also pushed the boundaries. Set back by limestone landslides and battered by gusting 130mph winds, workers were heavily tested by the elements. Efforts resulted in a remarkable structure which broke several records - the highest pylons in the world, the highest road bridge deck in Europe, and the tallest structure in France. An engineering triumph.”