The contract awarded to the joint venture of Tunnel Albabstieg from Munich for engineering planning and construction of the 5.9 km-long Albabstieg tunnel with two single-track tubes with crosspassages on the section at Ulm-Dornstadt part of the new 60 km-long AV line Wendlingen-Ulm (lot PA 2.4) has been modified due to the need for further and tighter controls of the excavated material. Duration of the contract is from 20/03/2017 to the 31/12/2017. For further information please contact DB AG, Stuttgart, fax +49 6926521939, e-mail einkauf-S21nbs@deutschebahn.com. Visit http://ted.europa.eu/udl?request=Seek-Deliver&language=en&docid=1084085-2017. Ref.n. TEC 5/10/239665. 12/17.