June 2022

Progress on the Eastern Hutt Road pipeline is well underway (a project connected to the Silverstream pipe bridge project - see March update below)

The Hutt River trail and carpark will remain open to the public.

There will be temporary disruption to the entry of the carpark, however clear signage is in place to guide you where to go.

21 March 2022

The Silverstream Pipe Bridge project funding was approved by Greater Wellington Regional Council last week. The Silverstream Pipe Bridge will replace the ageing bulk water main, which supplies treated drinking water to all of Porirua City and 40% of Wellington City. The current water main is in poor condition, and sits below SH2, which makes accessing it for repairs extremely tricky.

This innovative new replacement will increase the seismic resilience of our drinking water network, and will protect our water supply in the event of an earthquake. 

The pipe is being built to fit along the bridge, with room for a cycleway, which will cross over te Awa Kairangi.

There are three related drinking water network projects in the vicinity.

  • The Silverstream Pipe Bridge project (shown as grey on the below map) – the consent processing is nearing completion
  • The Kingsley watermain renewal (shown as purple) – Work here is well under way with works on hold for the next two months for the piling and stream crossing works to be done.    
  • The Eastern Hutt Road watermain renewal (shown as blue) – consent is granted for this section of pipeline, the construction work is being carried out by Wellington Pipelines.


4 November 2021

Public submissions are now open on the consent application for the Silverstream Pipe Bridge. Make your submission online through Greater Wellington Regional Council.


22 September 2021

Following analysis of the ground samples we have taken to date, some further investigation of rock characteristics are required to inform the design. This will require an inclined bore hole on the true right of the river bank as indicated below. Crews are planning to start this work at the end of September and will be on site for up to three weeks.


Alert Level 3

This project is critical and essential and will start up under Alert Level 3. All of the necessary safety precautions will be followed, including the use of PPE. 

Revised date of completion is 15 October 2021.

We aim to provide regular updates about the project and what's happening on site.

9 July 2021


Yesterday, we gathered at Hull's Creek in Silverstream to bless the site where this exciting project is about to get underway on te Awa Kairangi (the Hutt River). We were honoured to have mātua Kura Moeahu, from Taranaki Whānui ki te Upoko o Te Ika, lead the blessing for us.

Thank you to Upper Hutt City CouncilGreater Wellington and Hutt City Council for your continued support with this project, as together we look to improve the resilience of the network for the customers.

24 May 2021

We are nearing the end of the detailed design phase for the Silverstream pipe bridge, with the remaining Manor Park golf course boreholes to be drilled this month. See the update for May below for more information on these geotechnical surveys. 


May 2021

Here's a look at what's happening on site during May.

We are nearing the end of the detailed design phase for the Silverstream pipe bridge. 

On 10 May, crews completed a survey of the pipe route through Manor Park golf course, particularly looking at the areas where the pipe borders the KiwiRail embankment.

Geotechnical surveys involving drilling boreholes are also planned for May and possibly June - this work helps us understand the characteristics of the land supporting our design and planning. Here's a map of outlining the planned boreholes.