ASTT Award for S1 Sewer Rehabilitation Project

Interflow’s world-leading expertise in sewer rehabilitation has once again been recognised with another prestigious Award.

At the recent Australasian Society for Trenchless Technology Conference, Queensland Urban Utilities and Interflow were jointly presented with the “Rehabilitation Project of the Year Award” for lining of Brisbane’s S1 sewer.

The S1 sewer is 100 years old and takes 60% of Brisbane’s sewage. It flows 20 metres below Kingsford Smith Drive, one of Brisbane’s busiest roads carrying 70,000 vehicles per day.

In preparation for the project QUU did extensive research to develop a suitable design method for such an important deep sewer.

The project was awarded to Interflow because we were able to meet stringent contract conditions including installing a Ribline steel reinforced polyethylene liner without blocking flow in the sewer or traffic on the road.

All work was carried out at night between 8 pm and 5 am. QUU were able to direct some of the flow during this time, but there was always significant flow in the pipeline while the liner was being installed.

The S1 sewer lining project is another example of how Interflow works with its Clients to jointly deliver difficult, but very important projects.