Open invitation to tender, deadline 14/08/2020, for supply, installation and commissioning of signals, PMV, signal supports and signal on portals as well as in the 5.7km Kerenzeberg tunnel on the N3, Lot BSA06. Duration of the contract is from 01.10.2020 al 31.12.2026. Contact Ofrou, Winterthur, tel +41 58 4804711, fax +41 58 4804790, e-mail beschaffung.winterthur@astra.admin.ch. For further tender documents please click here (German/French) and here. Ref.n. 070191. 28/20.