O Mahurangi project update

30 October 2025

Latest flyover and timelapse video

Check out our latest flyover video

Our latest flyover video shows the start of our earthworks season as works ramp up over the drier period.

You'll notice Link Road 3, Duck Creek Road section and areas around Whangaparaoa Road are progressing. At the Weiti River bridge, you can now see the tower crane and Pier 4, whilst the diaphragm at Pier 1 is taking shape. 

At the end we have timelapse footage showing the progress of the Weiti River bridge. To watch just the timelapse, skip to 4:32.

To view the video click here or on the image.

Upcoming information event in Whangaparāoa

If you have any questions on the project, come and speak with the team next month. Our next information evening is Tuesday 11 November from 4-7pm at the Hibiscus Coast RSA. 

Auckland Transport will also be joining us to answer any questions you may have on the Whangaparāoa Bus Station project. 

Future intersection of Whangaparaoa Road and Beverley Road

What's happening in November

State Highway 1 and Ara Weiti Road

Works continue on from last month including the shaping of the on and off ramps from SH1. 

The abutment beams on the East Coast Road overbridge will begin construction, whilst Bridge 3 at the Link Road 1 connection will have its beams installed and start on the deck and reinforcement for the headwall, a type of retaining wall for the bridge.

On Ara Weiti Road, the drainage team require a stop/go for 5 days to complete the installation of drainage pipes and manholes across the road. 

Stillwater

The Duck Creek Road bridge excavation is about to start, as the future road alignment will go beneath the new bridge before approaching the Weiti River.

The single lane will remain in place, including across the new Duck Creek Road bridge when traffic is moved onto it to allow the construction for the existing road to 'tie-in' to the bridge.

At the Weiti River Bridge, the river pylons are growing with the regular concrete pours, and the Pier 1 diaphragm is close to having its first concrete pour. 

Earthworks season is well underway with operations across all areas.

Whangaparāoa 

The future intersection between Whangaparāoa Road and Beverley Place is taking shape with construction continuing, including drainage. The works mean traffic for Wiriana Place will be temporarily diverted. Night works are also required to allow traffic safety barriers to be relocated. 

In the wider area, earthworks are continuing, including excavation for a retaining wall and underground ducting for various services. 

Pavements team working at Duck Creek Road

The many layers for a resilient road

Laying the pavement for a new road isn’t as simple as rolling some asphalt. For the main alignment we have 9 different layers that make up the final pavement. Each layer has a specific role in ensuring the necessary strength and durability of the road:

• Subgrade - is the first layer. We improve the strength by mixing lime and cement into the ground, making a stable layer for everything else to sit on.
• Subsoil drains - are installed either side of the road to help remove excess water from the soil layers. This improves the performance and longevity of the road.
• Subgrade Improvement Layer - is made of aggregate to form a strong foundation for the road.
• Granular Subbase - is also made from aggregate, and is used to give extra support and strength to the pavement.
• Foamed Bitumen Stabilised Basecourse - is used to create a solid, flexible, and water resistant base for the road which provides more longevity to the pavement.
• Chipseal - acts as a protective barrier to help keep water out of the lower layers in the road. It's rough texture allows the asphalt to bond and improve the road's durability.
• DG10 - acts as a supportive layer of asphalt.
• Membrane Seal - is a thin layer of bitumen and a layer of fine aggregate, which provides waterproofing to the pavement.
• Asphalt Wearing Course - is the layer vehicles drive on. Across the highway we use different types of asphalt depending on the specific needs and condition of the road. This includes Open-graded porous asphalt (OGPA) which is known for its noise reducing abilities.

Whangaparāoa community event

Last chance to complete our engagement survey

Each year we ask the community and our stakeholders to give us feedback on the communications and engagement on the project. We use the results from the survey to refine how we work and communicate with you. 

This year's survey is closing soon, so please provide your feedback by Monday 3 November, however we welcome ongoing feedback at any time. 

To take the survey please click here. 

In addition to providing feedback through the survey, we welcome ongoing feedback on our communication strategy at any time. You can reach us via our project email at omahurangi@nzta.govt.nz or by calling 0800 7365 465.

Rollers resurfacing the highway

Travelling north in November? Allow extra time

The SH1 Brynderwyn Hills recovery project will be delivering the final resurfacing of the road in November. This will ensure SH1 over the Brynderwyn Hills is fully open for summer, avoid extending disruption over multiple months, and support Northland’s freight and peak tourism season.

This work includes two 4-day 'super weekend' closures. Three detour routes will be in place during this time - 

• Thursday 13 November morning (12:01am) to Sunday 16 November midnight (11:59pm)
• Thursday 20 November morning (12:01am) to Sunday 23 November midnight (11:59pm)

These dates balance traffic volumes, spring paving conditions and feedback from previous closures. Spring offers the best chance of dry, warm conditions needed for a high-quality asphalt finish, while avoiding the peak summer tourism period. Weekend closures also reduce disruption to freight.

Click here for more information including detour routes.

More information

For more information on the O Mahurangi project, contact us at omahurangi@nzta.govt.nz or by calling 0800 7365 465.

Visit our website www.nzta.govt.nz/penlink.