Skip to content

North-South Bypass Tunnel

The CLEM7 Tunnel, known as the North-South Bypass Tunnel during construction, is a new toll road built under the Brisbane River. It comprises two 4.8 kilometre twin-lane tunnels which bypass the city's central business district, significantly reducing congestion.

In addition to being the longest road tunnel in Australia, it is also the most advanced with many safety features. In the event of a fire or explosion, a high-tech ventilation system comprising 100 jet fans will rapidly extract smoke to a longitudinal duct high above the road deck.

Ancon Tunnel Suspension

Ancon designed and manufactured the stainless steel suspension system used to hold the immense concrete slabs which form the duct.

Each component of the system performs an essential structural function within a highly corrosive environment. The welded sections were subject to particularly demanding quality standards and each underwent an intense test and inspection programme prior to despatch to confirm its integrity.

Ancon also fabricated the 33,000 light gauge stainless steel posts used to support the architectural lining around the tunnel walls. A dedicated production cell produced 1,900 posts per week to meet a strict site schedule.

Latest News

Ancon now Industry Partner of NPCAA

We are pleased to confirm that we are now Industry Partner members of the National Precast Association (NPCAA) in support of their aim to advance precast as a construction method in Australia.

Building with Bricks? Count on our support...

Shelf angle systems provides flexible, cost-effective design solutions for the support of masonry cladding and are designed to suit specific applications, taking into account loading, fixings position and cavity width.