The Millau Viaduct in southern France is the world's tallest bridge, rising 343 metres (1,125 feet) above the Tarn valley. That height surpasses the Eiffel Tower, which stands at 330 metres (1,083 feet). The viaduct cost approximately €394 million (£345 million) to construct and opened in 2004. It was designed by British architect Norman Foster and forms part of the A75 motorway linking Paris to the Mediterranean.
Key design features to combat driver discomfort
The viaduct is not straight; it has a gentle curve that extends up to 20 kilometres on each side of the carriageway. This design helps counter the sensation of "floating" that drivers might experience on a long, straight bridge. According to Enjoy Travel, the slight curve and a 3% incline improve visibility and reassure drivers.
The bridge is exposed to strong gusts of wind up to 151 km/h. To address this, designers installed side screens that reduce wind impact by 50 per cent.
Construction history and purpose
Le Shuttle stated: "Plans for a road crossing to alleviate the traffic through the town of Millau date from the 1980s. British architect Sir Norman Foster was among the team that designed the viaduct, which was considered the most viable solution to cross the valley and river, with the least ecological impact on the area. Construction of the viaduct began in 2001."
The viaduct stretches 2,460 metres in length and touches the valley floor only nine times across its span. Pedestrian access is prohibited because it is a high-speed motorway, but guided informational tours are available. Tours include a nature trail to an observation deck beneath the bridge and access inside one of the tallest pylons.
Tourism and events
The Millau Viaduct draws tourists despite being a motorway. A marathon is held annually across the viaduct, and the Tour de France has passed beneath it on numerous occasions. Visitors on TripAdvisor have praised the experience. One remarked: "Love bridges. This is one not to be missed. Be sure to take a look at it from below to get a real sense of it. Real engineering feat." Another said: "An absolutely superb place! The viaduct and the surrounding landscape are so beautiful that you feel like you are part of a painting or drawing! It is truly a work of engineering of the highest level." A third visitor noted: "Visited today after it been on my bucket list. Great visitors centre, cafe and toilets. Parking is free and you can walk up a 470m path to an awesome view point. You can see the viaduct and surrounding areas. Drove over the bridge with stunning views."
