Open invitation to tender, deadline 26.06.2012, for architectural, engineering and planning services during construction of the platform of the Prada-Porto and left track Prado tunnel section on the Madrid-Galicia high-speed railway, North-North West corridor. Contract value EUR4.86 million, VAT not included, duration 38 months. Time limit for accessing documents 19.06.2012. Contact Adif C/Titan, Madrid, tel +34 917744837, e-mail mjmoro@adif.es. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=154250-2012. 22/12.