Successful pylon installation on the Steigerwald motorway

Another milestone was reached on the A3 Steigerwald motorway last Wednesday: the pylons of the BW314a structure were successfully moved into position by the Donges installation team. This bridge is the twenty-first of a total of 22 planned steel structures and the first cable-stayed bridge in the project.

The pylons are technically challenging as they are inclined in two directions when viewed from above. The cross-section tapers towards the top. The pylons were assembled using two mobile cranes. Thanks to a hinged construction, the mobile cranes were then able to erect the pylons safely and precisely. There was a critical tilting moment during which the pylon swung through on the crane hook. This method made it possible to bring the pylon into a vertical position in a controlled manner and at the same time anchor it to the intended attachment points.

The bridge was planned almost exclusively with the help of 3-dimensional models, which made the construction and assembly planning much more precise.

In terms of steel construction, the BW314a structure is probably the most beautiful and challenging bridge on the Steigerwald motorway. As a cable-stayed bridge, it will attract attention above all through its architectural aesthetics.

With the successful erection of the pylons, the major project is nearing completion, at least as far as the steel construction is concerned.

The A3 Steigerwald motorway is a major infrastructure project that is of great importance for both local and national traffic.The expansion and modernisation of the route is expected to significantly improve road safety and traffic flow.

The client and the companies involved can look back with pride on the work carried out so far, which has paved the way for a modern and efficient transport artery through the Steigerwald.