Prior to Millau's record breaking bridge piers of meters, the history of these towering structures has been almost entirely in Europe outside of two U. Before Kocher the tallest were the meter pier of Italy's Rago Viaduct. Before that California's Pit River Bridge had the tallest at meters. Before California's Pit River crossing, the tallest purely concrete and stone pier was on France's Fades Viaduct at Prior to Fades and Sitter the tallest bridge pier was the all steel Before Gokteik the tallest steel bridge pier was the central tower of the Kinzua Viaduct at 87 meters.
Before Kinzua the Grandfrey Viaduct of Switzerland held the record with steel and stone piers In the Crumlin Viaduct was the tallest with purely steel piers 64 meters tall while the Sitter Viaduct had stone and iron piers of approximately 56 meters in height.
The Portage Viaduct had masonry and timber piers of 67 meters. Prior to Portage there were few true "piers" of great height, only stone aqueducts such as the Pont Roquefavour in France and the Ponte Delle Torri in Spoleto, Italy with structural heights of 82 meters.
Spain's Puente Nuevo or New Ronda Bridge also has a structural height in the meter height range though the masonry walls hug the sides of the gorge cliff more like a giant foundation then a true stand-alone pier or aqueduct. A view of the deck during the launching phase with visible deformations prior to the tower and cable stay erection.
The bending of the deck was calculated by the engineers before construction. Millau Viaduct From HighestBridges. Construction began on 16th of October First piers were started in January and finished in November Roadways were finished on May , pylons and shrouds in the second half of the and the viaduct was opened on 16 December - 25 days ahead of schedule. President Jacques Chirac opened the bridge during the opening ceremony. This bridge broke several records. It has the highest pylons in the world meters and meters , the highest bridge tower in the world meters and the highest road bridge deck in Europe meters.
Metallic deck has a total mass of around 36, tonnes, length of 2. Six central spans have length of meters while two outer spans are meters. There are seven masts, each 87 meters high and weighting tonnes each. Like many viaducts, in fact, any civil engineering project, around the world, the main reason was to solve a problem. A plan to build a bridge to span the Tarn Valley was first discussed as early as Before this point in time, eager holidaymakers from Paris to Spain had to descend into the valley to get there.
This plagued the infrastructure of the valley, namely the R oute Nationale N9 that passes near the town of Millau. It often caused heavy congestion and much disruption for locals.
Something needed to be done and so an announcement was made in to build the viaduct to relieve pressure on local roads. Virlogeux just so happened to be a bridge specialist who, up to this point, had designed no less than bridges. These included the Pont de Normandie in northern France. Foster, on the other hand, a prolific British architect, was considered one of the most accomplished architects of his generation.
In he was awarded the Pritzker Architecture Prize , often referred to as the Nobel Prize of architecture. The combination of a visionary architect and a highly accomplished structural engineer was considered the perfect mix to achieve the ambitious project.
The viaduct's actual construction was entrusted to the construction company Eiffage. As we have already alluded to, the viaduct's main claim to fame is its impressive height. It stands at meters and is most famous for being the tallest bridge in the world. This makes her head and shoulders above her closest competition , the Yavuz Sultan Selim Bridge in Istanbul Turkey meters and the Russky Bridge in Russia meters.
She is a cable-stayed, concrete and steel construction viaduct motorway bridge that spans the Tarn gorge valley near the town of Millau in Southern France. She cost somewhere in the order of million Euros to build and officially opened for business in The viaduct is widely considered a great technical and architectural feat and has won various awards since its inauguration. Those interested in bridges, and heading for the Millau Viaduct south down the A75 motorway from Clermont Ferrand, will want to stop off on the way to view another magnificent viaduct, Gustave Eiffel's Viaduc de Garabit.
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