Restricted invitation to tender, deadline 29.02.2016, for preventive and corrective maintenance in the eastern tube of the 2.3 km William of Orange tunnel in Delft. Duration of the contract is from 01.09.2016 to 31.12.2019 with the availability to extend up to 9 years. For electronic access to information and submission of tenders https://www.tenderned.nl:443/tenderned-web/aankondiging/detail/samenvatting.xhtml?aankondigingId=74187. Contact ProRail BV, att.n Charlotte Pars, Utrecht or e-mail aanbestedingen@prorail.nl. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=42789-2016. Ref.n. L-004910. 06/16.