Open invitation to tender, deadline 19.07.2013, for construction of the Isla Bella safety tunnel, and for the refurbishment of the tunnels Isla Bella (2,449 m) and Plazzas (254 m) on N13. Duration of contract January 2014 to December 2024. Contact USTRA, Bellinzona, e-mail acquistipubblici@astra.admin.ch. To register interest, visit http://www.simap.ch/shabforms/servlet/Search?NOTICE_NR=777523. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=180843-2013. 23/13.