Open invitation to tender, deadline 02.08.2016, for metrological supervision during the construction of the third tube of the Gubrist tunnel (lot 205) part of the N01/38,42 Zurich northern ring road extension. The duration of the contract is from 01.11.2016 until the 31.12.2022. For further information go to http://www.simap.ch/shabforms/servlet/Search?NOTICE_NR=920821. Contact OFROU, Winterthour, tel +41 58 4804711, fax +41 58 4804790, e-mail beschaffung.winterthur@astra.admin.ch. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=217996-2016. Ref.n. 100046. 26/16.