Negotiated procedure with prior publication of a call for competition, deadline 24/06/2025, for the design of the operational systems in the Weserau tunnel (1,733 m) in the city of Porta Westfalica on federal road B61. Click here for bid documents and here where tenders must be sent. Duration of contract 16 months. Contact Landesbetrieb Straßenbau NRW, Bielefeld, tel +49 52110820, fax +49 5211082210, email RNL-OWL-Vergabeservice@strassen.nrw.de. Visit https://ted.europa.eu/en/notice/-/detail/332478-2025. Ref.n. 05_00-4005-B_85-23-5004. 24/25.