Hochmosel Bridge – B 50 new
|Company||PORR GmbH & Co. KGaA in a consortium|
|Principal||Landesbetrieb Mobilität Trier|
|Location||Zeltingen-Rachtig - Germany|
|Runtime||07.2011 - 09.2018|
Germany’s largest bridge-building project at the time of its construction start
PORR Deutschland has been charged with building the Hochmosel Bridge as part of a consortium. The bridge in Rhineland-Palatinate, with an approximate length of 1,700m, was Germany’s largest and most challenging bridge construction project when work began in 2011. The bridge is the centrepiece of the new B 50 federal highway, part of an international road axis that is set to connect the Benelux countries with the Rhine-Main area; it should also close the gap in the arterial road network between the A 60 at Wittlich in the direction of Mainz.
The reinforced concrete piers have single-cell, right-angled, hollow cross sections and walls of between 30 and 60cm thick. They have a conical shape along their longitude and are sharply tapered laterally. The single-piece superstructure will be realised across eleven fields as a continuous steel girder bridge with an orthotropic deck slab. The height of the structure varies depending on the intervals of the supports and reaches its maximum height of 7.78m at axis 4. As the bridge spans the valley at heights of up to 150m, it barely impacts on the views of the Mosel Valley below. Despite its size, it blends in well with the landscape.
In addition to the reinforced concrete works, PORR also carried out numerous services such as the specialist civil engineering for construction pits and slope stabilisation. In light of the form, height, foundation parameters and mass distribution, PORR placed a particular emphasis on the load case of the turbulence-induced lateral oscillations: pier models were tested in a wind tunnel, investigations were carried out to reduce these loads, measures to reduce the loads were developed and then the findings were successfully realised in practice.