Negotiated invitation to tender, deadline 21.05.2014, for renovation of construction site, trackwork and retaining walls at portals of 903 m-long Pforzheimer twin-track tunnel on Karlsruhe-Muehlacker line. Duration of contract 03.03.2015 to 31.12.2019. Further information, specs and docs from Bernhard Hofman, DB AG Region Suedwest in Frankfurt am Main, tel +49 71120927773, fax +49 71120927780, e-mail bernhard.hofman@deutschebahn.com, to whom tenders or requests to participate must be sent. Time limit for requests for documents 16.00h on 16.05.2014. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=148478-2014. 18/14.