December 2021 - Construction underway; April 2021 - Construction commenced; January 2021 - Deutsche Einheit Fernstrabenplanungs- und -bau awarded a EUR580mn (USD715.3mn) contract to a joint venture between HOCHTIEF and Implenia to build the 2.2km Altona noise protection tunnel; Project is a part of A7 Motorway, Hochstrabe Elbmarsch Widening Project; Project cost - EUR580mn