New route of A9 motorway in Montpellier Construction of Lez

New route of A9 motorway in Montpellier Construction of Lez

Bridge
New route of A9 motorway in Montpellier
Construction of Lez-Lironde viaduct
Client
Vinci Autoroutes, Société des autoroutes
du Sud de la France
Civil engineer
Ingerop
Year of construction
2015
Project description
Tonnage
5’530 T
Viaduct consisting in 2 separate decks of
550 meters each across the Lez-La
Lironde river, the avenue Georges Frêche,
the avenue des Platanes and the RD 58
road located on the town of Lattes.
The standard spans are of 78.50 m length.
Both decks are made up of double I-beams
with cross and cantilever
girders
supporting the slab. Les main beams
height varies between 2.0 and 3.50 m.
The span across the Lez river is set up by
launching. The rest of the bridge will be
erected by crane from the ground.