Open invitation to tender, deadline 05.10.2012, for structural engineering design and construction of Sonic Boom portal for Blessberg cut/cover tunnel on Ebensfeld-Erfurt railway in Thuringerwald, Ortschaften Stelzen and Truckenthal. Contract commences 15.01.2013 for completion 31.10.2013. Further information, specs and docs from Uwe Gruetze at DB Projektbau in Erfurt, tel +49 3614300-398, fax –399, e-mail uwe.gruetze@deutschebahn.com, to whom tenders or requests to participate must be sent. Time limit for requests to access documents 28.09.2012. Visit tunnelbuilder archive de/14 for project history, and http://ted.publications.eu.int/udl?request=Seek-Deliver&language=en&docid=247801-2012. 32/12.