Published 4/09/2025
Final works to bring Whakawhirinaki Silverstream Pipe Bridge online start next week
Works to connect Whakawhirinaki, the new Silverstream Pipe Bridge, to the drinking water network are expected to start next week, which will cause disruption for commuters on State Highway 2 at Silverstream and Fergusson Drive.
“This is a key project for the region’s drinking water resilience because the existing pipeline crossing Te Awa Kairangi / Hutt River at Silverstream is in poor condition and vulnerable to earthquake and flooding events,” says Wellington Water Chief Operating Officer Charles Barker.
“Supplying the whole of Upper Hutt, Stokes Valley, Porirua, and up to 40% of Wellington City, this pipeline is a vital part of the region’s drinking water network. Connecting the new pipe bridge, which has been built to withstand major earthquake and flooding, to this pipeline is an important step in future-proofing Wellington’s drinking water supply.”
The works will be carried out at two locations: Fergusson Drive in Upper Hutt and SH2 at Silverstream.
Minor lane diversions will be set up on Fergusson Drive from 7 September until early November, with full traffic management on SH2 at Silverstream planned between 13 September and early-October.
On SH2, the two northbound vehicle lanes will remain open to minimise disruption but will be reduced in width to allow for the work to take place.
This section of the cycle lane heading north will be closed. We recommend that cyclists look for alternative routes and travel options where they can. Cyclists are advised to check Wellington Water’s website when planning for their trips and follow signage.
”We acknowledge the frustration that occurs when works of this nature are taking place on state highways and major local roads like Fergusson Drive.
“We are minimising disruption as much as possible. We ask the public to be patient and plan ahead while we complete this critical work to safeguard Wellington’s drinking water supply,” says Charles.
Regular updates will be available on Wellington Water’s website and social media.
This project is part of a wider programme of work to increase the region’s drinking water resilience, including the completed Kaitoke pipe bridge and the Te Mārua Water Treatment Plant Capacity Optimisation project.
Editor notes
Wellington Water is owned and fully funded by Wellington City Council, Hutt City Council, Porirua City Council, and Upper Hutt City Council, Greater Wellington Regional Council and South Wairarapa District Council. All six councils are equal shareholders.
Our councils own the water infrastructure in the region, and they task us to manage the infrastructure and deliver water services to our communities.
Wellington Water is governed by a Board of Directors. The Board and our organisation receive overall leadership and direction from the Wellington Water Committee, which are also responsible for appointing members to the Board.
The Wellington Water Committee is made up of representatives from our council owners and mana whenua.