Implenia and Hochtief are building tunnels in Hamburg
The construction and real estate company Implenia and the German construction group Hochtief have been awarded the contract to build the Altona noise protection tunnel. The order value for the 2.2 kilometer long tunnel on the A7 in Hamburg is around 580 million euros.
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Implenia and the Hochtief construction group will jointly build the 2.2-kilometer-long Altona noise protection tunnel. According to a press release from Implenia, the project on the A7 motorway in Hamburg has an order value of around 580 million euros. Allotment gardens as well as green spaces and parks are to be created on the cover of this tunnel. In addition, the two neighboring districts of Othmarschen and Bahrenfeld will be connected to each other again.
The work between the A7 junctions Othmarschen and Volkspark is expected to begin in April 2021 and be completed by 2028. Implenia will manage the project commercially in a joint venture with Hochtief. Hochtief is the technical lead. Implenia's share of the total order volume is 35 percent.
As Christian Späth, Head of the Civil Engineering Division at Implenia, explains, his company was able to identify numerous optimization options in the bidding process that has been running since 2019. “Among other things, we brought forward parts of the implementation planning and gradually incorporated the results from more than 30 coordination dates into the calculation. In this way we were able to significantly minimize the project risks for everyone involved. "
