Open invitation to tender, deadline 05/08/2022, for disassembly, reassembly and protection of all management and safety systems in the Schweizerhalle tunnel (1200 m, 900 m) on the Hagnau - Augst section of the N02, to allow cathodic corrosion protection (PCA) to be carried out on the spacers (two traffic directions) and the repair of the back wall (Chiasso tube), Lot V71. For further information please click here (German) and/or here (French). Duration of the contract is from 01/10/2022 to 31/12/2025. Contact Ofrou, Zofingen, tel +41 58 482 75 11, fax +41 58 482 75 90, email zofingen@astra.admin.ch. Visit http://ted.publications.eu.int/udl?request=Seek-Deliver&language=en&docid=334076-2022. Ref.n. 190096. 26/22.