Porr is using two 12t Wolffkran cranes to assist construction of a bridge on a new national motorway in Germany.
The High Mosel Bridge is part of the Bundesstrasse 50, a project established by the German state that will connect the Benelux countries with the Rhine-Main region of Germany.
The bridge, which is 1.7km long and 158m high, is being constructed over vineyards in the Mosel Valley region. The project required contractor Porr Deutschland to expand its fleet with the two Wolff 6031.12 flattop trolley jib cranes, and to commission Wolffkran to provide associated services at the site over the next four years.
The cranes, which are operating at heights of 113.6m and 131.6m with a jib length of 40m, are being used to erect four pairs of bridge pylons and are currently working on the second pair. For the higher pylons, the cranes will rise to a hook height of 163m.
The cranes will be relocated several times throughout the project, including climbing and tie-ins — with the windy conditions in the region making the operations particularly challenging, said Wolffkran.
The cranes are set to work on the bridge until 2016, before the bridge is opened to traffic in 2018.