Open invitation to tender, deadline 03/05/2021, for assistance services during phase 2.2 of the safety works in the 1.5 km-long twin tube Grand Mare tunnel on the RN28. For tender documents please click here, where tenders must be sent. Duration of the contract is 12 months. Contact DIR Nord-Ouest, Darnetal, tel +33 232832050, email District-De-Rouen.Dir-No@developpement-durable.gouv.fr. For further on the tender, please click here. Ref.n. ROUEN-2020-004. 12/21.
