Open invitation to tender, deadline 04/07/2023, for the control and cleaning of technical equipment in the 2.4km Tiergarten Spreebogen Tunnel (TTS), in escape and rescue routes, in the three company buildings, on B96 in Berlin. For tender documents please click here, where tenders must be sent. Contact Senatsverwaltung fur Mobilitat, Verkehr, Klimaschutz und Umwelt, Abteilung Tiefbau, Berlin, tel +49 30902547118, email submissionsstelle.tiefbau@senumvk.berlin.de. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=322733-2023. Ref.n. 23-058. 22/23.