We’ll be undertaking works to rehabilitate a one-kilometre section of the Surrey Road Relief Main Drain in South Yarra and upgrade the existing access manholes. This will allow for safe construction works and future maintenance activities.

The drain is a circular brick drain, ranging in cross-section from 1.06 metres diameter at Bendigo Street to 1.37 metres diameter at Surrey Road North. It services an approximate area of 150 hectares.

Why this is important

The Surrey Road Relief Main Drain in Prahran and South Yarra is reaching the end of its service life and needs to be replaced. A routine inspection in 2018 identified the drain’s deteriorating condition.

What’s happening and when

This project will involve relining the drain with GeoKrete, an environmentally-friendly geopolymer structural liner. We will also be constructing or renewing nine manholes to improve maintenance and repair safety.

Geopolymer is designed to provide corrosion-resistant protection, increasing structural integrity and stopping groundwater infiltrating deteriorating structures. It will be applied by low-pressure spraying on the drain surface to a thickness up to 25 millimetres and allowed to cure.

Once the pipe is relined, the entire work site will be restored to its pre-existing condition.

Location

Map of project area, starting north of Surrey Park the progressing along Surrey Road to Princes Street.
Map of project area along Surrey Road - click to enlarge.

The north end of the project area starts in South Yarra on Surrey Road North, near Surrey Park, and ends near the Flying Duck Hotel in Prahran.

The drain runs along Surrey Road, crossing into Prahran at Malvern Road, with the deteriorated section continuing for 300 metres down to Bendigo Street.

Timing

Works are expected to commence in April 2021 and are anticipated to take a total of twelve weeks to complete, weather permitting.

The drain rehabilitation works will be undertaken along several fronts, with each stage taking around three weeks.

We will advise neighbouring properties when we will be in your location, to ensure you are fully aware of the works and any potential impacts.

What to expect

There will be no impact or interruptions to your water supply or sewerage services throughout the works.

There may be some short-term disturbances, but rest assured in the long term local residents will benefit from improved drainage and flood protection in the area.

Diagram showing existing manhole used to insert GeoKrete liner into existing stormwater drain, 2-3 metres underground.
Diagram showing GeoKrete being used to reline the drain via existing manholes.

We are also making every effort to minimise the expected impacts when completing these works. However, you will notice: 

  • pathway closures
  • partial road closures
  • noise
  • dust
  • increased truck movements
  • restricted access to driveway (we will discuss this directly with impacted residents)
  • removal of trees in the nature strip
  • temporary loss of street parking in some areas. 

We understand the value of trees to the community. If removal is required, we will work with council and nearby residents to understand opportunities for offset planting.

Last updated:
28 January 2021