Open invitation to tender, deadline 13.11.2017, for safety management of existing road tunnels in the Principality of Asturias. Contract value EUR 405 552, excluding VAT, duration 24 months. For procurement documents https://contrataciondelestado.es/wps/poc?uri=deeplink:detalle_licitacion&idEvl=2xWGwrKc9%2BwQK2TEfXGy%2BA%3D%3D. Contact Direccion General de Carreteras, Madrid, tel +34 915978-341, fax -547, email jgcid@fomento.es. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=385092-2017. Bid code n. 30.47/17; AC-507/17. 40/17.