France – Civil engineering support services – Maîtrise d'oeuvre et mission complémentaires pour les travaux de démontage des anciens treillis et de sécurisation des zones découvertes, et d'approfondissement et éventuel traitement sur les fissures sur la Voute du Tunnel du Mont Blanc

The present contract concerns the supervision and associated additional tasks related to the works of dismantling the old trusses and securing the exposed areas, re-evaluating the trusses and structural plates and deepening and possible treatment of the cracks that delimit a closed surface on the Vault of the Mont Blanc Tunnel in accordance with the specifications set out in the Special Technical Clauses Document (CCTP).