Open invitation to tender, deadline 24/03/2023, for the rehabilitation of the Air shaft (Lot 31) of the San Bernardino tunnel (6,596 m) on the N13. For further information click here (Italian) and/or here (French). The duration of the contract is from 01/06/2023 to 31/12/2027. Contact Ofrou, Bellinzona, tel +41 58 469 68 11, fax +41 58 469 68 90, email acquistipubblici@astra.admin.ch. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=59573-2023. Ref.n. 070007. 05/23.
