Simplify the following text for a Grade 9 native English-speaking person.
Original: It was designed by the French structural engineer Michel Virlogeux and British architect Sir Norman Foster .
Simplified: Designed by the French structural engineer Michel Virlogeux and British architect Norman Foster , it is the tallest bridge in the world , with one mast 's summit at 343.0 m. The viaduct is part of the A75-A71 autoroute axis from Paris to Montpellier .