Open invitation to tender, deadline 18/12/2019, for the installation of an automatic closing system with barriers stopping access to the following tunnels, Vernier (1,940 m, 1,860 m), Confignon (1,455 m, 1,455 m) and the cut & cover Chevres on the N01 Bernex – Ferney section. The duration of the contract is from 20/02/2020 to 31/12/2020. For tender documents please click here (French) and here ( German). Contact Ofrou, Estavayer-le-Lac, tel + 41 58 461 87 11, email marchespublics.estavayer@astra.admin.ch. For further tender documents please click here. Bid Code n. N01.12 080159. 43/19.