The Millau Viaduct is the tallest bridge of the world with a height of 343 meters. The bridge is even taller than the Eiffel tower. The bridge was opened for public on 16th December, 2004. The Millau Viaduct is also the world’s longest cable-stayed bridge with a total length of 2460 meters. The bridge spans over the valley of the river Tarn in the southern part of France.
It took almost three years to complete the construction of the bridge. The bridge was designed by the British architect Norman Foster and Michel Virlogeux, a French structural engineer. Let’s take a look at some of the structural details of the Millau Viaduct.
· -height of the roadway over the Tarn valley is about 280 meters.
· -The total length of the roadway is 2.46 kilometers and weighs about 36,000 tonnes.
· -There is a total of eight spans resting on seven piers.
· -About 19,000 tones of steel were used for the reinforcement of the concrete piers.
· -About 5,000 tonnes of steel were used in the construction of stays and cables.
Eiffage Group was the main constructor of the bridge and the total cost associated with the bridge is anticipated to be 300 million Euros. The estimated lifespan of the bridge is about 120 years. Millau Viaduct received the ‘2006 IABSE Outstanding Structure Award’ for its high structural specifications.