Sarens was contracted to dismantle the "Passerelle des Rocs" bridge that was built in the 1970's over train tracks in the center of the city of Poitiers. Sarens lifted in total three pre-stressed bridge elements and three piles, the largest element being 52m long and weighing 270t.
The challenge was multiple :
- Designing an appropriate spreader bar of 50m
- Rigging a CC6800 with reduced space and truck access
- Lifting the bridge sections and piles in the authorized time windows: power cuts for the whole SNCF train infrastructure during night
Despite a first windy evening implicating several planning rearrangements, Sarens carried out the job within the scheduled time. Sarens brought its heavy lifting experience and flexibility to adapt realistically to the requests of a demanding but cooperative client.