A9 Tunnel Wald & Pretallerkogel
2018-05-21 12:35
by Dürr Group GmbH

A9 Tunnel Wald & Pretallerkogel

electro-mechanical equipment

Completion: 04/2018
Length: 2,840 m
530 m
Tubes: 2

North-South transit axis

The A9 is part of a 230 km long north-south transit axis between the crossroad Voralpenkreuz and Spielfeld on the border to Slovenia. It is thus an important north-south transversal, not only in Austria but also in the European transport network. The tunnels Wald & Pretallerkogel are situated between the motorway junction Treglwang and Kalwang. DÜRR Austria was awarded with the contract in April 2016 and the traffic release of the A9 took place in April 2018 after a nearly two-year project period.

Project Features

3 UPS units
18 jet fans in crossway
26 jet fans in tunnel driving space
33 traffic signs
54 LED-variable message signs
8 info displays
139 escape route lights
125 CCTV cameras incl. video detection
45 emergency roadside telephones
26 speakers & amplifiers
28 local control units & 28 switches
330 km energy cabling & 75 km control cabling
75 km fiber optic cables


low voltage distribution boards


tunnel lights


LED-lane indicators


system data points

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