Negotiated invitation to tender, deadline 15/09/2023, for the design of the twin tube Kockelsberg (2.2 km) and Weisserg (500 m) tunnels including engineering structures, traffic systems, and technical route equipment for the new section Kottewitz - Weinböhla, km 18.809 - km 25.530 , of the Leipzig- Dresden line. Click here for bid/tender documents, where offers must be sent. Duration of the contract is from 02/01/2024 al 31/12/2029. Contact DB Netz AG, attn Marlis Petzold, Frankfurt Main, tel +49 3514618497, fax +49 3514613079, email Marlis.Petzold@deutschebahn.com. Visit https://ted.europa.eu/en/notice/-/detail/500363-2023. Ref.n. 23FEI68137. 34/23.