Compliance lift on 6 underpasses:
- A6 PI 56 and 74 in the district of Gatinais,
- A31 PI 15; 29; 38; 70 in the district of Dijonnais.
Lot 1 - Lift compliance - A6 PI56 + 132 and A6 PI74 + 589 Curing a work; reconstruction of the bosses 1150 dm
- firm tranche: compliance and repair of PI,
- optional slice: purges and protection by sacrificial anodes abutment abutments.
Lot 2 - lift compliance - A31 PI15 + 008, A31 PI29 + 295, A31 PI38 + 660 and A31 PI70 + 213 Purging concretes, use of sealed steels, crack injection, shotcrete 795 m