Open invitation to tender, deadline 18.09.2015, for construction of the 1,002 m-long safety tunnel, five crosspassages, and north and south portals for 1,030 m-long Barenburg tunnel on N13. Duration of contract from 01.06.2016 to 30.04.2019. More from http://www.simap.ch/shabforms/servlet/Search?NOTICE_NR=873961. Contact Ofrou, Bellinzona, e-mail acquistipubblici@astra.admin.ch. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=239856-2015. Ref. 090042. 28/15.
