B67a Southern Belt Graz
2017-05-19 13:30
by Carina Göbl

B67a Southern Belt Graz

electro-mechanical equipment

Client: Government of Styria
Completion: 05/2017
Length: 1,442 m
Tubes: 2

The South of Graz

To improve traffic in the south of Graz, a section of four lanes was built between the Puntigamer bridge and the Liebenauer Belt. The 2-kilometer-long clasp was laid out as a double-tube subsurface route (about 1.4 kilometers) and connected via two roundabouts in Puntigam and Liebenau. DÜRR Austria was awarded with the contract in September 2015, following a two-year project period the traffic release of the southern belt took place in May 2017.

Project Features

1 UPS unit
24 jet fans
2 axial fans
11 traffic signs
8 LED-variable message signs
16 alternate route indicators
2 info displays
68 escape route lights
62 CCTV cameras (45 incl. video detection)
24 emergency roadside telephones
4 speakers & amplifiers
14 local control units & 47 switches
174 km energy cabling & control cabling
16.5 km fiber optic cables


low voltage distribution boards


tunnel lights


LED-lane indicators


system data points

Go back

© 2022 Dürr Austria GmbH. All rights reserved.