A93 Pfreimd: asphalting across all carriageways

Rädlinger's Selbitz branch had less than two months between May and July to knock the 4500-metre-long section of the A93 motorway between Regensburg and Weiden at Pfreimd into shape. The resurfacing at the Pfreimd junction had to be done over the course of a weekend road closure, due to the high volume of traffic.

In close cooperation with colleagues from Rädlinger Ingenieurbau Vilshofen, two of the three bridges were repaired on the section. A detailed reconciliation between road and bridge measures was crucial to the process and to the success of the entire project, some of which was performed in shifts by the teams from Selbitz and Vilshofen.

The traffic-safety measures were particularly burdensome, including about 7,500 metres of portable barriers, and were therefore carried out alongside a strong partner. Following this, the existing road surface was first milled over an area of about 40,000 square meters. In addition, approximately 3,000 metres of granite shelves were replaced, along with the corresponding drainage wells and gutters and 4,000 m³ of verge material.

The installation of the base, binder and surface courses were each done seamlessly across the full width of the two carriageways and the hard shoulder, thus increasing the quality and durability of the road. Paving widths of up to 11 m were achieved in full using just one asphalt paver with feeder – to ensure an uninterrupted supply of the relevant mixture. For larger paving widths, a second asphalt paver with feeder was also used. Overall, the required quantity of asphalt mix was about 28,000 tonnes. Despite the time pressure, the construction project was completed punctually and to the client's satisfaction.


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