Project Description

Client: URS Australia
value: $1.4 billion
Completion: June 2015

The challenge: Legacy Way is Brisbane City Council’s 4.6km underground toll road that links the Western Freeway at Toowong with the Inner City Bypass (ICB) at Kelvin Grove. Legacy Way comprises of two parallel tunnels each with two traffic lanes, which pass underneath sections of Toowong, Auchenflower, Milton, Paddington, Red Hill and Kelvin Grove. Opened in June 2015, the tunnel reduces the peak hour travel time of journeys from the Centenary Bridge to the ICB by up to 44%.

Our solution: Exova Defire was the Qualified Fire Engineer for the project. We were responsible for initiating and managing stakeholder consultation in regards to fire and life safety and planning and preparation of all fire safety engineering assessments for the tunnel. These assessments demonstrated that the tunnel maintains an adequate level of safety for motorists whilst complying with the project specific design and contractual requirements. Exova Defire had an ongoing role to monitor the construction phase and commissioning of the tunnel in regards to compliance with the fire safety engineering documentation prepared.

In addition to the works in the occupied tunnel areas, Exova Defire was also responsible for reviewing the level of compliance with the Building Code of Australia (BCA) of surface structures – such as ventilation station buildings – and preparing alternative solutions for these buildings, particularly where connection to the tunnel prevents full compliance with the BCA. Exova Defire also provided solutions and advice for a number of temporary buildings that made up the construction sites, and for the level of safety during a fire in the tunnels whilst under construction.