Responsible Agency: Department of Transport and Main Roads
BQ Role: Led business case
Proposal Stage of Development: Business case complete
Planned Stage End Date: N/A
Estimated Cost of Delivery: $5.4 billion*
Date of Publication: June 2016 (for the period 3 December 2015 – 3 June 2016)


Forecast population and employment growth for South East Queensland (SEQ) will increase private vehicle and public transport (rail and bus) congestion. With only one rail connection across the Brisbane River near the CBD (where most of SEQ’s employment growth is projected), options to increase rail services to meet projected demand generated outside of Brisbane (where most of SEQ’s population growth is projected) are limited. Other proposals (such as the ETCS– Inner City project) will increase the network’s efficiency, but an infrastructure solution is ultimately needed.


The objectives of the proposal are to:

  • provide an additional rail crossing across the Brisbane River
  • boost inner city public transport capacity
  • reshape the network to unlock sustainable urban development

The proposal will deliver a 10.2 kilometre rail link connecting Dutton Park in the south to Bowen Hills in the north, including twin 5.9 kilometre tunnels under the Brisbane River and CBD. The proposal will enable the delivery of new underground stations at Boggo Road, Woolloongabba, Albert Street and Roma Street and upgrades to existing stations at Dutton Park and Exhibition. It also includes conducting track works at Mayne Yard and repurposes the Exhibition Line from a special use line to a standard link in the rail network.


Queensland Government investment consideration.


* Nominal cost in Australian dollars, Building Queensland Business Case 2016.