Slab tracks Wienerwald Tunnel

In the east, the dual-track new construction section Vienna–St. Pölten connects to the connecting section between the Western, Eastern and Donauländebahn railway lines (Lainz Tunnel project) and links to the existing Western Railway line via the Wagram junction. The new construction section’s overall length is approx. 44km of which Wienerwald Tunnel, which runs from Hadersdorf-Weidlingau in the east to Chorherrn in the west, represents 11.6km.

The main portion of this section was executed as two single-track tunnel tubes equipped with slab tracks and, in parts, with mass-spring systems. The entire track superstructure allows for the use of emergency vehicles and thus meets the tunnel safety concept. 

• Installation of 5,000 track support plates 
• Transport and pre-storage of rails 120m in length using special equipment and two-way excavators
• 26km of slab tracks/mass-spring system track support plates in the tunnel area
• Installation of four switches in the slab tracks
• Construction of 2km of ballasted track
• 26km of pipelines for fire-extinguishing water
• 2,450t of reinforcements