B85: one lane wider in the district of Regen

The Arberland hills – as the district of Regen likes to call itself – forms a picturesque scene in all seasons. However, at the Marcher heights on the B85 in Regen, this scene could be deceptive, at least during the winter months: snow and cold often led to poor road conditions and traffic would slow on uphill stretches or would even be brought to a halt. The numerous inclines, typical of the region, presented lorries with a significant challenge throughout the year. Fully laden, some struggle up the steep slopes at just 40 km/h, even in good weather.

By widening the B85 to include an additional uphill lane, the Passau state building authority is killing two birds with one stone. Firstly, the capacity of this busy road is increased, on the other hand, traffic safety is improved in a sustainable manner. The latter is especially significant for this former accident hotspot. Irrespective of whether lorries move merely at low speeds or even break down: in the future, other road users will always have the opportunity of overtaking safely on the hill.

Since construction began in September 2013, Rädlinger employees have created a 1500-metre, three-lane section and a parallel, 1700-metre track for farm vehicles. On another 2000-metre stretch, they have conducted road surface improvements, built almost 5 km of drainage lines with about 120 chambers and crossed underneath the B85 at a depth of 6.5 m. Rädlinger received support from subcontractors with the controlled milling of the road surface, necessary due to the gradient and slope adjustment of the B85.

With regard to the necessary traffic rerouting, the Passau building authority opted for the main road to be blocked in one direction: whilst traffic towards Regen continued to flow via the B85, vehicles coming in the opposite direction were diverted onto the link road at Obermitterdorf. The access road, which was just 3 metres wide, was straightened by the contractor in some places and re-asphalted, to enable lorries better passage over it. This solution, designed to prevent rerouting via Langsdorf and Bodenmais, meanwhile became the project's greatest challenge. The team, however, always found ways to deal effectively with the constant passage of traffic through the site. On 12 September 2014, in time for the start of the new school year, the 3.5-km-long section between Arnetsried and the Metten 2 business park was once again fully opened.


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