The Works Operation consists of the environmental requalification of the A1 between PR 201+350 and PR 204+000. The work will be the subject of an optional tranche contract. Firm Phase: Treatment and infiltration basins Optional Tranche 1: Creation of a watertight longitudinal sewerage network in the Lille-Paris direction Optional Tranche 2: Creation of a watertight longitudinal sewerage network in the Paris-Lille direction
The Works Operation consists of the environmental requalification of the A1 between PR 201+350 and PR 204+000. The work will be the subject of an optional tranche contract. Firm Phase: Treatment and infiltration basins Optional Tranche 1: Creation of a watertight longitudinal sewerage network in the Lille-Paris direction Optional Tranche 2: Creation of a watertight longitudinal sewerage network in the Paris-Lille direction