Project
3 new bridges and a temporary bridge for the motorway junction
Work description
Bridge 1: PS JCT du Grand-Saconnex – cable-stayed bridge
– Orthotropic steel deck (~1’000 tons)
– Double central cable-stayed deck
– Span: 80.0 m / Width: 27.4 m / Height: 37.0 m (mast)
Bridge 2: PS de Bois-Brûlé
– Welded compound open steel caisson (~200 tons)
– Length: 135.0 m (5 spans from 16.0 to 25.0 m)
– Caisson width: 3.9 m / Caisson height: 1.25 m
Bridge 3: PS de Colovrex
– Open composite welded steel double caissons (~200 tons)
– Span: 53.0 m / Caisson width: 3.8 m / Caisson height: 1.8 m
Bridge 4: PS provisoire de Colovrex for motorway crossing
– HEB900 rolled sections (~190 tons)
– Span: 30.0 m
Completion
2020 – 2022
Client
Office fédéral des routes OFROU
Main Contractors
Association 4J for JAG – Walo Bertschinger SA / JPF Construction SA / Perrin Frères SA / Rampini SA
Engineer
T-Ingénierie SA