Centenary Motorways Outlined in SEQ $62 Billion Infrastructure Plan

The South East Queensland (SEQ) Council of Mayors has identified the Centenary Motorways Bypass as one of 47 roads and railways that will benefit from its $63 billion infrastructure plan. Released in January, the massive project is expected to ease traffic gridlocks to improve livability in SEQ in the next 25 years.

The Strategic Transport Road Map for SEQ names the Centenary Motorway Bypass as part of its key projects, along with Brisbane Metro, Cross River Rail, North-West Transport Corridor, Fast Rail (Northern, Southern and Western Corridor), North-South Link ((Inner Western Bypass), East-West Link (Toowong on Legacy Way to South East Freeway Tunnel), and other upgrades like various green bridges and pedestrians or cycle cross-river links.



The road map is based on a study the Council commissioned to address traffic challenges in SEQ. The report projected these critical roads, if not upgraded, would reach over capacity by 2031.

To deliver all these projects will require an average of $2.7 billion spending a year, from 2019 to 2041. To upgrade the Centenary Motorway would cost $1.1 billion.

The plan will entail building a four-lane tunnel that will link Sumners Rd interchange to Toowong. This tunnel will run parallel to the Centenary Motorway and bypass the traffic at the Centenary bridge.

Photo Credit: Wikimedia Commons/kgbo

Another proposed tunnel will link Toowong from the Centenary Motorway going to the Everton Park.

The infrastructure improvements must be undertaken in phases as soon as possible as the projected the population growth for the region will necessitate more transport demands. Current committed infrastructure projects, even if delivered and completed, will not suffice if major corridors like the Centenary Motorway are not improved.



Brisbane Lord Mayor Graham Quirk said SEQ could not afford project delays as it will trigger higher infrastructure spending and cripple the region. However, there’s still the matter of funding the projects.

“This report is a very important one, but the elephant in the room is we need a Federal Government who is committed to infrastructure in South East Queensland,” Transport Minister Mark Bailey said while commending the mayors’ initiative.

Photo Credit: Council of Mayors SEQ

Centenary Motorway Bypass Among the Key Projects in the Strategic Transport Road Map for SEQ

In a bid to prevent possible gridlock by 2041, the Council of Mayors (SEQ) has announced the road map of 47 road and rail projects, including the Centenary Motorway Bypass, that will address potential transport and congestion problems that South East Queensland will face decades into the future.

Coinciding with the announcement of the Strategic Transport Road Map was the release of the SEQ People Mass Movement Study that looked into the possible impact that the population growth will have on SEQ’s transport demand in the future.

“Our research shows that even if every committed and planned project in this region is delivered, the majority of SEQ’s major road corridors will be over capacity by 2031. By 2041, the region will be in gridlock,” said Council of Mayors (SEQ) chairman and Brisbane lord mayor — Graham Quirk.

“The region has never had a shortage of plans or strategies from Federal, State and Local governments, but this is the first time we’ve had a consolidated view of transport in SEQ. The SEQ People Mass Movement Study brings all of these plans into one complete regional strategy,” Cr Quirk said.

Photo Credit: Council of Mayors (SEQ) / seqmayors.qld.gov.auk

The study ultimately led to the outlining of prioritised transport projects that are necessary to meet the future demand between 2019 – 2041, which is estimated to cost around $2.7 billion per year. The Council says that the figure is achievable considering the average spend in SEQ of about $ 2 – 3 billion per year.

“Forty-seven major projects are prioritised in the SEQ People Mass Movement Study for delivery over the next 23 years. This includes the introduction of a faster rail network running from the Sunshine Coast to the Gold Coast via Brisbane, and to Ipswich and then Toowoomba,” Cr Quirk said.

Some of the priority projects under the Transport Strategy for South East Queensland include:

  • Brisbane Metro
  • Cross River Rail
  • Faster Rail – Southern Corridor
  • Faster Rail – Northern Corridor
  • Faster Rail – Western Corridor
  • Sunshine Coast Light Rail
  • Centenary Motorway Bypass – Sumners Road Interchange to Legacy Way at Toowong and linking to North-South Link at Everton Park
  • North-South Link (Inner Western Bypass) – Tunnel corridor linking from Toowong (Centenary Motorway and Legacy Way) to the North West Transport Corridor at Everton Park
  • North West Transport Corridor – Urban passenger rail and 4 lane urban motorway from Bald Hills to Stafford Road and Alderley Station
  • East-West Link – Toowong (Legacy Way) to South East Freeway Tunnel Pacific, Ipswich, Centenary and Mt Lindesay Motorway and Bruce Highway Upgrade Projects.


The Transport Vision is divided into “½ hour Smart City” and “Smart Regional Connectivity”. The “Smart Regional Connectivity” aims to cut travel time to 45 minutes: between Brisbane-Gold Coast, Brisbane-Sunshine Coast, Brisbane-Ipswich, and to the eastern edge of Toowoomba from Brisbane. The “½ hour Smart City”, on the other hand, aims to cut urban commutes to 30 minutes.

“An SEQ faster rail network will slash commute times from the Sunshine Coast to 45 minutes, from the Gold Coast to 35 minutes and from Ipswich to just 20 minutes. This will take immense pressure of the Bruce and Pacific highways and support the fast-growing communities of Ipswich, Logan and Moreton Bay,” he said.

RACQ, the State’s peak motoring body, through its spokesperson Paul Turner, welcomed the announcement. He said that the Club is particularly pleased to see many of the priority projects, outlined in the Mobility Matters Report, incorporated in the Transport Strategy as well.

“These are critical transport projects that are essential to meet population growth, manage congestion and improve productivity in the region into the future,” Mr Turner said.

The full list and description of the 47 priority projects can be viewed here.