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Kalkallo Creek Main Sewer Project

Yarra Valley Water is constructing over 4 kilometres of critical sewerage infrastructure to support the growth of communities in Melbourne’s northern growth corridor.

Project details

The new sewer will collect sewage flows from customers west of the Melbourne to Sydney rail line, between Donnybrook Road and the Wallan township. The sewer is critical, as it will be the outlet for all developments within the Urban Growth Boundary west of the Hume Freeway and north of Donnybrook Road, and will connect into the Amaroo Main Sewer (currently being constructed).

Construction details

The majority of the new sewer pipe is being constructed using a Micro Tunnelling Boring Machine. The project involves:

  • Building approximately 4.4 km of sewer using a Glass Reinforced Polymer pipe (GRP) at depths ranging from approximately 6 to 15 metres
  • Tunnelling underneath the Merri Creek and Hume Freeway
  • Constructing 13 new sewer manholes, ranging from 1.8m to 3.5m in diameter.
Map of the Kalkallo Creek Main Sewer Project
The red line shows where pipes will be built. The blue line shows sections of pipe we've already completed.

Work updates

  • August 2018

    Our works have experienced some delays, and we now expect to complete the project in early 2019.

    Abergeldie Complex Infrastructure has finished digging 11 out of 13 deep shafts along the alignment of the sewer pipe, into which our two micro Tunnel Boring Machines (TBMs) were lowered.

    The TBMs are constructing the new pipe by tunnelling from shaft to shaft at depths of between 6 and 15 metres, and then pushing lengths of pipe into the underground tunnel hole. Our tunnelling is about 60 per cent complete.

Project timeframe

Key project milestones include:

  • Construction started – early May 2017
  • Construction completed – early 2019

Our contractor, Abergeldie Complex Infrastructure, is undertaking their above-ground works from Monday to Friday, between 7.00am and 5.00pm. Some Saturday work will be required from time to time.

Underground tunnelling works have been underway since July 2017, and occur 24 hours a day on weekdays, and 12 hours a day on Saturdays. Note, these works won't be noticeable from above ground.

Crane structure
The crane structure that enables our TBM to be lowered into the shaft, from where it will tunnel and drop new sections of pipe into position

Community impact

We are working with the contractor to minimise the impact of these important works on the community. During the construction period, impacts may include:

  • Construction noise such as truck engines, machinery, excavation and associated construction activities.
  • Vibration is expected to be minimal but may be noticed in close proximity to the shaft sites. We will be monitoring vibration levels.
  • Dust may result from our excavation activities during dry weather, however we will be managing this in accordance with Environment Protection Authority (EPA) Victoria guidelines through the use of water trucks and reduced speed limits.
  • Vehicle traffic will be increased due to the amount of trucks in the area, and a traffic management plan will be in effect throughout the works.

Contact us

If you have any other questions or feedback about this project, please call the project manager, Ashley Hamer, directly on 9872 2661.