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Project introduction

O Mahurangi – Penlink will form a vital transport link in north Auckland as more people live and work in Silverdale, Whangaparāoa and the Hibiscus Coast. The new two-lane road and shared walking and cycling path will provide improved travel times between Whangaparāoa and wider Auckland.

  • Estimated project cost

    $830 million
  • Project type

    Road improvements, Walking and cycling

Project updates

O Mahurangi - Penlink February 2023
O Mahurangi - Penlink Project Update
O Mahurangi Penlink - December 2022
Breaking ground on a ground-breaking venture
Media release,
O Mahurangi Penlink - November 2022
O Mahurangi Penlink - September 2022

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Key features

  • A new 7km transport connection between the Whangaparāoa Peninsula and SH1 at Redvale
  • A separated shared path for people walking and people on bikes between Whangaparāoa Road and East Coast Road
  • South-facing ramps to SH1, with an overpass over SH1 (located between the Bawden Road bridge and BP station)
  • Local road connections at Whangaparāoa Road, Stillwater township, and additional connections for future developments at Ara Wēiti Road and East Coast Road
  • A new bridge crossing the Wēiti River.

Read about our key design refinements

O Mahurangi – Penlink visual updates

Why do we need O Mahurangi – Penlink?

O Mahurangi – Penlink is one of the important first steps to providing people in north Auckland with real choice in the way they travel and help improve climate outcomes by providing for transport capacity and for people to travel on foot or by bike.

Substantial growth is forecast in the Whangaparāoa Peninsula, Wēiti, Orewa, Silverdale and surrounding areas. For example, in Silverdale-Dairy Flat, around 15,000 new homes are expected to be built over the next 30 years, with 6,000 of these built over the next decade.

The two-lane connection will provide capacity for existing residents and future housing developments in the area, supporting:

  • planned development in Dairy Flat and Silverdale
  • more travel choices for people walking and on bikes
  • improved transport services with more reliable journey experiences
  • a more coordinated transport network in north Auckland.

Project background

The need for a new connection to the Whangaparāoa Peninsula has a long history. In the 1980s the idea for the ‘Wēiti Crossing,’ or a bridge across the Wēiti River connecting Stillwater to Whangaparāoa, was first identified.

Rodney District Council decided that a new access corridor from East Coast Road to Whangaparāoa Peninsula was the best option. This would address both transport and land-use needs. The idea for the corridor became known as ‘Penlink’ (shortened from Peninsula Link). A scheme design and work to protect the land corridor for O Mahurangi – Penlink followed.

The designation, construction and operational resource consents were approved in 2001. The designation allowed for the construction and operation of the two-lane road and the ability to buy the land required. The council was unable to secure funding for O Mahurangi – Penlink despite the transport need for the project.

Following the establishment of Auckland Council in 2010, Auckland Transport took on the O Mahurangi – Penlink project. In the 2010s, there was significant engagement with a range of partners, stakeholders and property owners.

On January 2020, the Government announced O Mahurangi – Penlink as a NZ Upgrade Programme initiative. They appointed Waka Kotahi as the delivery agent for the project. In June 2021, the Government confirmed funding for the full delivery of the project. The two-lane, proposed toll road is due to start construction in 2023.

In June 2022, HEB, Fulton Hogan, Aurecon and Tonkin + Taylor gathered with Waka Kotahi to sign an agreement. The group became an alliance to construct the O Mahurangi – Penlink project.

At the alliance signing ceremony, Mana Whenua gifted the name O Mahurangi to the project. The name recognises the ancestress Mahurangi, a tohunga (priestess) who lived in Hawaiiki. The powers of Mahurangi enabled the construction of the great voyaging waka Tainui.

Route details

  • O Mahurangi – Penlink will cross over East Coast Road and connect to SH1 with a new interchange, including south facing ramps.
  • The interchange will allow for future land development in the Wēiti area. This aligns with the Supporting Growth Programme.
  • The corridor will connect to Whangaparāoa Road at Beverley Road with a new signalised intersection. The corridor then crosses the Wēiti River on a new bridge.
  • The corridor is just north of Stillwater with a new connection for the community. The corridor then continues towards SH1 south by Ara Weiti Road.
  • The corridor traverses both existing developed areas and greenfield areas.

Out of scope

The following components will not be part of the O Mahurangi – Penlink project:

  • Local road works beyond the existing design.
  • Upgrades on the existing SH1 Northern Motorway beyond the south facing ramps.

Project timeline