Open invitation to tender, deadline 11/09/2025, for the optimisation of the Gubrist tunnel drainage, Affoltern portal area includes (Lot 388), part of the N01/38, Zurich Northern Bypass extension. Click here for bid documents. Duration of the contract is from 01/01/2026 to 31/12/2027. Contact Ofrou, Winterthur, tel +41 58 480 47 11, email beschaffung.winterthur@astra.admin.ch. Visit https://ted.europa.eu/en/notice/-/detail/485148-2025. Ref. n. MP-100047. 31/25.
