Queensland Urban Utilities is committed to excellence in water and sewerage services that meet the evolving needs of our customers and enhance our communities.

As part of this commitment, we’re investing $55 million to build a new 4.25km sewer main between Wecker Road, Mansfield and Cadogan Street, Carindale. The project will cater for future growth and development in the catchment area and reduce the likelihood of sewage overflows.

Previous stages 1 and 1A of the Bulimba Creek Trunk Sewer upgrade were completed in 2004-2016 and 2011-2013 in Mansfield, Wishart, Eight Mile Plains and Macgregor.

The existing Bulimba Creek Trunk Sewer Services about 158,000 people to the south-east of the Brisbane CBD. It is comprised of about 62km of sewer pipes ranging in diameter from 375mm to 1,650mm and discharges to the Gibson Island Sewage Treatment Plant.

Current construction

Ewer Street tunnel borer exit shaft

We have excavated approximately 950 cubic metres from the shaft on the corner of Ewer Street and Scrub Road to a depth of over 40 metres with just eight metres to go.

Following the construction of the shaft, the site will be pulled in and secured and Ewer Street will be opened following a traffic safety assessment. The site will remain secured until the tunnel boring machine is pulled out of the shaft in early-2018 and then again when work is completed around mid-2018.

What have we done so far?

Since August 2016, the project team has:

  • constructed a tunnel boring machine exit shaft in Edwards Reserve off Tones Road, Mansfield
  • constructed two tunnel boring machine entry shafts, one on the Allen Innes Oval off Tones Road in Mansfield and one on the corner of Pine Mountain and Scrub Roads in Carindale.
  • tunnelled between the Allen Innes Oval entry shaft and the Edwards Reserve exit shaft. The tunnel boring machine will now be moved to our Kenmore-Jindalee Cross River Pipeline project to construct a 550m tunnel under the Brisbane river before being brought back to the Bulimba Creek Stage 2 Sewer Upgrade in mid-2017.
The shaft in Edwards Reserve has been made secure and will remain inactive until the tunnel boring machine tunnels through from the Pine Mountain/Scrub Road shaft. The shaft on the corner of Pine Mountain and Scrub Roads will remain inactive until the tunnel boring machine is brought to site around May 2017.

What’s next?

Over the coming six months we will be:
  • ongoing constructing the shaft on the corner of Ewer Street and Scrub Road, Carindale
  • tunnelling from the shaft on the corner of Pine Mountain and Scrub Roads, Carindale through to Edwards Reserve and then to the shaft on the corner of Ewer Street and Scrub Road
  • constructing the shaft on Scrub Road near the Energex Substation (near 110 Scrub Road), Carindale. Details on what the community can expect will be issued closer to the start of construction.

You can interact with this map by zooming in and out and clicking on the map features for more information.

Our commitment

The project team is committed to minimising the construction impacts on local residents.

We will keep you informed about progress and provide regular construction updates for directly impacted residents. We will also work closely with the project contractor to ensure every effort is made to keep any disturbances to a minimum.

At any time during the construction, you can contact the project team on 1800 071 230 (24/7) if you have any questions or concerns. 

To find out more

To find out more about the Bulimba Creek Stage 2 Sewer Upgrade or to register to receive project updates, you can:

  • Phone: 07 3855 6730 (Weekdays 9am-5pm)
  • Phone: 1800 071 230 (24/7)
  • Email:
Thank you for your patience during this essential work.

Meet Sewey the Tunnel Boring Machine!

Caitlin Gamble was the winner of the tunnel boring machine design competition

We invited the Easts Mt Gravatt Junior Rugby League Football Club under 12 members to design and name our tunnel boring machine. Caitlin Gamble is seen here with her winning design. 

Sewey the Tunnel Boring Machine was launched on 25 November 2016.

Sewey is a 14m long, by 1.8m diamter wide tunnel boring machine that weighs more than 45 tonnes - the equivalent of six elephants. It has finished its first tunnel section from the Allen Innes Field to the Edwards Reserve exit shaft.

  Tunnel boring machine ready to start tunnelling from Allen Innes Reserve (MH7T)

Sewey pictured here in the launch position in the Allen Innes Oval shaft.

The shaft on the corner of Pine Mountain and Scrub Roads is ready for the tunnel boring machine when it arrives in May

The shaft on the corner of Pine Mountain and Scrub Roads is now complete and ready for the Tunnel Boring Machine to be brought to site around mid-2017. The site will be made secure and remain inactive until then.

Artists impression of Tunnel Borer in launching shaft and sewerage pipes being lowered into position

This graphic shows the tunnel boring machine in place and the sewer pipe being lowered into the sewer shaft. Tunnel boring is a trenchless technology that significantly reduces the impact of constructing a sewer on the community and the environment.


Tunnell Boring Machine exit shaft colar in place in preparation for shaft construction

Looking into the shaft at Edwards Reserve


Digging out the shaft in Edwards Reserve 

Caissons shafts are constructed using a hydraulic ram and concrete segments.When we hit rock and can no longer use the 'caisson' method of constructing the shaft, a digger is lowered by crane into the shaft and a hydraulic pick is used to break up the rock. Concrete (or shotcrete) is then sprayed onto the walls of the shaft.

Edwards Reserve construction site panoramic from the bikeway/footpath

A panoramic view of the Edwards Reserve construction site from the bikeway/footpath.

 Temporary access road to construction area around outside of rugby field

The temporary access road has been constructed to allow construction vehicles to enter the Allen Innes Oval site. The access road goes around the outside of the Rugby Club's football fields to minimise impacts on the Club.

Looking into the shaft on the Pacific Golf Club corner of Pine Mountain and Scrub Roads

Construction of the shaft on the Pacific Golf Club corner of Pine Mountain and Scrub Roads is well underway.

Worker in cage being taken out of the shaft

A shaft construction worker being taken out of the shaft by a craned cage. The worker operates the digger down the bottom of the shaft.

Open trenching sewer

Where tunnel boring is not possible open trenching will be used. Open trenching involves digging a ditch then laying the sewer pipe. The ditch is then back filled and rehabilitated.

The Bulimba Creek Stage 2 Sewer Upgrade Fact Sheet can be found here

Are you interested in specific aspects of the project?

Construction methodology