Darra to Toowong Tunnel: Queensland’s Tunnel Plan Sparks Infrastructure Debate

Plans for a feasibility study on a tunnel stretching from Darra to Toowong, as part of the Centenary Motorway upgrade, have sparked both excitement and criticism among local officials, residents, and transportation experts.


Read: Plans To Upgrade Section Of Toowong To Darra Gets $10M In Funding Commitment


The potential tunnel has been hailed as a “game changer” for the community, with the belief that exploring such options will benefit local businesses, residents relying on the motorway, and commuters who will have access to more reliable bus services.

Darra to Toowong
Centenary Motorway upgrade planning project map (Photo credit: tmr.qld.gov.au)

RACQ Calls for a Broader Perspective

While the proposal has garnered support, it has also faced criticism. The Royal Automobile Club of Queensland (RACQ) argues that the tunnel, as currently envisioned, falls short of providing a comprehensive solution to the region’s traffic woes.

Joshua Cooney, General Manager of Advocacy at RACQ, stated the need for a more holistic approach: “Any study needs to look at what’s happening at the northern end of the route. There’s no point feeding traffic into Brisbane City or the Inner City Bypass. This would effectively mean spending billions of taxpayer dollars to shift the problem from one location to another.”

RACQ is advocating for an “orbital solution” that would provide an alternative route around the city rather than through it. Cooney suggested linking the proposed tunnel with a north-west bypass corridor, potentially connecting to the Gympie Road Bypass once completed.

Current Congestion and Future Concerns

Darra to Toowong
Photo credit: Google Street View

The urgency of the situation is underscored by current traffic conditions on the Centenary Motorway. During peak hours, traffic speeds slow to around 37 km/hour from 6:00 a.m. to 10:00 a.m. in both directions.

RACQ previously called for comprehensive planning to address Southeast Queensland’s predicted population growth and to deliver lasting transport legacy projects for the 2032 Olympic Games and beyond.


Read: Toowong to West End Bridge: Brisbane’s Stalled Project Seeks New Momentum


Looking Ahead

As the tunnel feasibility study moves forward, the debate continues over how best to alleviate traffic congestion and improve transportation infrastructure in the region. The outcome of this study and subsequent decisions will likely have far-reaching implications for Brisbane’s urban landscape and the daily lives of its residents for decades to come.

Published 13-September-2024

Plans To Upgrade Section Of Toowong To Darra Gets $10M In Funding Commitment

The Centenary Motorway, which stretches from Frederick St in Toowong to Ipswich Mtwy in Darra, could receive some much-needed upgrades soon, to help increase traffic flow in the area, through a $10-million masterplan.


Read: Heritage-Listed ‘Dovercourt’ to Undergo Major Restoration


This comes after the Department of Transport and Main Roads announced that they are updating previous planning for the Centenary Motorway between Toowong and Darra. 

The high volumes of traffic between the Ipswich Motorway interchange in the south and Toowong in the north result in road congestion and poor trip reliability and road safety.

The masterplan, which already received a $10million commitment from the Federal Government, will involve outlining measures to improve safety, travel-time reliability and efficiency on an arterial road. It will also identify the most effective “staging approach’’ to deliver the motorway upgrade.

Additional options to improve capacity along the motorway might include intersection and on-ramp and off-ramp improvements, implementing smart freeway technology, and road widening.

Groups, especially the RACQ, welcomed the announcement given that they have been campaigning for the said upgrades to the section for several years now.

Gregory Miszkowycz, traffic and safety engineering manager at RACQ, said the section of the thoroughfare is one of the slowest highway commutes in southeast Queensland.

centenary motorway
Photo credit: Google Street View

According to RACQ, it’s the Brisbane road with the lowest inbound peak hour speed, with vehicles moving at an average speed of 39.9 km/h on the motorway.

With regard to the planned Centenary Motorway upgrades, TMR said it would be upgraded in stages as funding becomes available. 

“When completed, the fully upgraded motorway will cater for the transport demands along the corridor in the medium to long-term with upgrades focusing on safety, improving travel-times, and active transport facilities,” TMR announced.

For more information about the Centenary Motorway upgrades, visit www.tmr.qld.gov.au