Open call for tenders, deadline 05/10/2021, for adaptation to Royal Decree 635/2006 of the Aguadulce tunnel (1000 m, 524 m) on the Mediterranean highway A-7 in Almeria province. Value of the contract is EUR 6.43 million, excluding VAT. Duration of the contract is 26 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=410752-2021. Ref.n. 254210437400. 37/21.