Open invitation to tender, deadline 24.01.2018, for the renewal of tracks and switches in the Loetschberg tunnel. The contract includes the adaptation of the drainage system. Duration of the contract from is 02.05.2018 to 31.12.2022. Further information from http://www.simap.ch/shabforms/servlet/Search?NOTICE_NR=986831 (German) and/or http://www.simap.ch/shabforms/servlet/Search?NOTICE_NR=986863 (French). Contact BLS AG, attn Silvio Gasparini, Berna, tel +32 583272958, email silvio.gasparini@bls.ch. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=384333-2017. Ref.n. 296. 40/17.