Open invitation to tender, deadline 04.09.2013, for the upgrading of the 1 km Barenburg tunnel on N13, e&m, safety and operational equipment included. Contact Ofrou, Bellinzona, e-mail acquistipubblici@astra.admin.ch. Visit http://www.simap.ch/shabforms/servlet/Search?NOTICE_NR=785397 and http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=256525-2013. 31/13.
