Open invitation to tender, deadline 28/01/2022, for the upgrading of the Caviedes (270 m), Hoz (830 m, 855 m) and Torrelavega (650 m) tunnels on the A-8 motorway and of the Gibaja (171 m) and Limpias (557 m) tunnels on the N-629 in the Cantabria province. Click here for tender documents. Contract value is EUR 12.55 million, excluding VAT, duration will be 39 months. Contact Direccion General de Carreteras, Madrid, tel +34 915978341, fax +34 915978547, email dgc.licitaciones@fomento.es. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=655220-2021. Bid code n. 254213961000. 52/21