BRIDGES JAG – Motorway junction du Grand-Saconnex

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)

Video OFROU

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