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Spain, Burgos - es/46


Open invitation to tender, deadline 28th March, 2001, for upgrading of CN-1 highway in Condado de Trevino including construction of twin-tube, three-lane, 1 km-long NATM tunnels with 200 sq m cross-section in sandy loams, calcareous sandstone and siltstone. Contact Ministry of Works, Madrid, fax +34 91 5978537. Visit www.boe.es 12/01. Consultancy contract awarded to Sercal to establish alternative alignments, for report end-2001. Visit www.sercal.es 22/01. Open invitation to tender, deadline 8th August, 2001, for engineering design of a section of the N-1 Madrid-Irun road with one tunnel for Ministry of Works, Madrid, fax +34 91 5978536. Visit www.boe.es and www.sercal.es 30/01.Pancorbo-Ameyugo section of N-1 motorway may require 11.5 m-diameter, 4 km-long, single tube tunnel in clayey ground and limestone. Decision expected late-2002. Visit www.sercal.es 43/01.