Prangl provides logistics concept to expand Voestbrücke in Linz
During the first construction phase, two bypasses will be added to the Voestbrücke bridge in Linz. Prangl is responsible for the logistics concept.
The planned expansion of the A7 Mühlkreis motorway in Linz will bring greater safety and fewer traffic jams to roughly 100,000 drivers every day. The aim of the two bypass bridges is to disentangle the flows of traffic. Once the two bridges are complete, only the through-traffic will travel across the main bridge. At the end of the construction period, the three-part bridge will have a total of eight lanes.
The experts from Prangl succeeded in scoring points with a comprehensive concept. All fabricated structural components are being transported from Germany to Linz in over 200 shipments. The heaviest bridge components weigh in at 62 tonnes.
The entire logistics plan involves a range of 3-axle and 4-axle tractor units with 8-axle and 9-axle semi-low-loaders, as well as 3-axle, 4-axle and 6-axle threefold telescopic flatdecks. With work taking place within very tight time constraints, a meticulously detailed plan was devised and agreed with the customer.
Minimisation of the interfaces is essential for smooth operation. Through the exclusive commissioning of Prangl, the transport and crane competence are being provided by a single source. The heaviest components are lifted directly from the HGV with a 600 tonne lattice boom crane. This saves a great deal of time, which is extremely costly due to the requirement for autobahn closures.
In total, Prangl will operate up to 20 machines on site (mobile cranes, aerial work platforms and telehandlers). A highlight is the tandem lift in the pre-assembly area. Components weighing up to 100 tonnes are unloaded with a 500 tonne and 350 tonne telescopic crane, and assembled to produce massive supporting structures with total weights of up to 2 500 tonnes. Using special equipment, these bridge components are then transported by cargo ship to the respective construction site, where they are hydraulically lifted.