How was the Millau Bridge deck moved into position?

The Millau Bridge deck was moved into position using a method called incremental launching. This involved building the deck in sections on one side of the valley, and then using hydraulic jacks to push each section forward until it reached its final position. The process was repeated until the entire deck was in place.

The incremental launching method was chosen for several reasons. First, it allowed the bridge to be built without the need for temporary supports in the valley, which would have been difficult and expensive to construct. Second, it allowed for a high degree of precision in the placement of the deck, which was essential for the safety and stability of the bridge. Third, it allowed the bridge to be built relatively quickly, with the entire process taking only about two years.

The Millau Bridge is a remarkable engineering achievement, and the incremental launching method played a key role in its success.