owner

state of geneva

department of public works
bridge division

project

project competition for the crossing of the lake in geneva - switzerland

scope of work of T ingénierie sa

general manager of the multidisciplinary projet team
main bridge conception and design
competition won in 1995 with a cable stayed and a suspended solutions

specifications

• single central cable suspended bridge
• main span of 950 m
• composite box section
• central suspension of the deck
• cable with varying section made of individually protected strands
• transversal stabilisation by torsion of the deck and contribution of the restraint forces due to the cable (purely non linear behaviour)
• liaison fixe du câble et du tablier au centre
• connection to left shore through a cut and covered tunnel used as anchoring
• connection to right shore over an artificial island and through a cut and covered immersed tunnel 800 m long

schedule

project refused by popular vote in june 1996