Open invitation to tender, deadline 17.03.2017, for civil works needed for the refurbishment of the 5.2 km-long Sachseln tunnel on the N08. This includes upgrades to its operational safety and ventilation equipment The contract also includes the refurbishment of the north, south and middle parts of the tunnel and the open air section. The contract duration is 60 months. Contact Ofrou in Zofingen, tel +41 58 482 75 11, fax +41 58 482 75 90, e-mail firstname.lastname@example.org. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=020797-2017. 03/17.