On the site of the sixth crossing of the Garonne, between Bègles and Floirac, the metal beams begin to be installed on Tuesday.
Only about thirty workers work on this site because many large parts are assembled in the factory and transported by exceptional convoys.
Bags of pebbles are positioned by divers at the foot of the piles to protect them from erosion, which is strong in the tumultuous Garonne.
Long-awaited, the book is taking shape.
The Simone Veil bridge construction site which will link Bègles to Floirac is progressing well and its delivery is announced for the spring of 2024.
20 Minutes
gives you five information that you may not know about this exceptional construction site on the occasion of the start of the installation of the steel frame, this Tuesday.
Only 30 workers on average on site
The sixth crossing over the Garonne was designed by the OMA agency, founded and managed by Rem Koolhaas.
It will measure 549 meters long and 44 meters wide.
On this titanic project, however, there are only about thirty workers on average mobilized on the site.
“It is increasingly mechanized work, but it must also be said that people have worked in the factories for the reinforcement parts which arrive in exceptional convoys”, points out Bertrand Arnauld de Sartre, crossing project manager at Bordeaux Métropole. .
The beams, 35 meters long, are transported from the factory of the Baudin Châteauneuf group, located in the Loiret.
An anti-erosion mat installed by divers
Packets of gabions (bags of stones) are installed one by one by divers all around the piles of the future bridge.
They form a carpet six meters wide and 40 cm thick to protect the pile from erosion.
It is a process used by builders in all rivers with strong currents such as the Garonne.
"Recently there was a restoration of the gabion carpets at the foot of the Stone Bridge", points out Bertrand Arnauld de Sartre.
Every five years, control visits are carried out on this type of structure.
Launching a frame takes time
This Tuesday was the first launching (or pushing) of the frame, which consists of advancing from one pile to another sections of the metal frame.
The operation, meticulous, is very slow.
It takes nearly four hours to advance the beams 80 meters.
For the spectacular side, it will be necessary to wait to view the process in accelerated... This type of operation is also used on road works for example because it allows to work without putting the teams on the water or on the roads in circulation.
Attention what connects the two banks, it is not the final bridge
For those who find that the site is progressing very quickly, beware what you see is the temporary boom used to build the eight piles of the structure and it will be removed at the end of the site.
Half of the foundations are now complete and next November, the junction with the left bank will be completed.
In mid-April, work will continue on the left bank to begin the last three piers.
Who finally won the bridge market?
After a technical dispute between Fayat and the metropolis, the Simone-Veil bridge award project was relaunched in January 2019. It was won by Bouygues/Profond, which took over the project in April 2021. And Baudin-Chateauneuf is in responsible for setting up the metal structure.
Bordeaux Métropole must coordinate these two groups which have won two different contracts.
Bordeaux
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Bouygues
Aquitaine
Worksite
Garonne
Bridge
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