Important projects and works

Repair of a 555-metre section of the road, a civil engineering challenge for the safety service

From March to June 2018, a 555-metre section of the Mont-Blanc Tunnel road surface was repaired. In other words, just over 4% of the total length of the Tunnel between the 6th and 7th kilometre.
In order to preserve a communication route that is strategic for the local economy and that of Europe, an innovative work method was studied which allowed the work to be done mainly during the night and to reopen the infrastructure every morning, thereby guaranteeing the safety of work site personnel and Tunnel users.
The 555-metre road surface was gradually repaired, night after night, by two work sites that were set up at the same time, one on each side of the Tunnel. They completed 20 metres each night (10 metres per work site).
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