Train path completion in Loosdorf

Geomembranes for new double-track train line

The construction site

The train bypass (GZU) between St. Pölten and Loosdorf is a new double-track train line with a design speed of 120 km/h.

 The new line of the train bypass goes around the city centre of St. Pölten in the south and relieves the train station St. Pölten of freight and transit traffic. The project is part of the four-track expansion of the Westbahn and of the trans-European network. It is co-financed by the European Union.

Project overview (Source; 02.07.2014)

Construction work started in December 1999. In 2000 the project was briefly stopped as increased capacity requirements were not expected until the new line between Vienna and St. Pölten was finished. With additional funding made available by the government’s economic recovery plan, the construction work for track completion between St. Pölten and Loosburg could be continued again.


Project data

  • 26‘600 m² HDPE Liner
  • Structured (MST+/MSB)
  • Thickness: 2.0 mm
Rainwater canal with HDPE lining

The new line proceeds parallel to the motorway A1 in many parts. Therefore, the rain and surface water accumulated on the motorway and the railway line has to be contained and eventually drained with the help of a rainwater canal.

Because of the restricted space conditions between motorway and railway line, a comparatively deep rainwater canal with a precipitous slope was planned. As a consequence, a flexible membrane with a high frictional coefficient against adjoining soil was needed.

Integration of precast concrete shafts


The structured MST+/MSB AGRU HDPE geomembranes fulfilled the requirements and enable a quick execution of the project.

The high flexibility of AGRU HDPE geomembranes enabled easy, time-saving integration of the precast concrete shafts in the sealing layer.

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