Open invitation to tender, deadline 20.08.2009, for engineering services during works to improve safety in 5.2 km-long Sachseln tunnel. Contact OFROU, Gestion des projets, Zofingen, tel +41 627457511, fax +41 627457590, e-mail zofingen@astra.admin.ch http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=173988-2009 27/09.