Negotiated invitation to tender, deadline 25/08/2022, for the adaptation and extension works of the Messberg station’s tunnel on the U1 metro line at Hamburg. The architectural barriers have to be eliminated. Click here for tender documents and where tenders must be sent. Duration contract from 26/06/2023 to 01/05/2025. Contact Hamburger Hochbahn AG, Hamburg, tel +49 403288-2138, email mathias.klatt@hochbahn.de. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=415951-2022. 30/22.