Northern Corridor Improvements

Connecting Auckland’s motorway infrastructure and building for tomorrow.

The Northern Corridor Improvements project significantly improved Auckland’s motorway connections. Commuters and freight can now easily travel direct between the North Shore, Auckland Airport, West Auckland, Manukau and Hamilton.

The new link connects SH1 directly to Upper Harbour Highway (SH18), opening access to the new Western Ring Route (SH16). Shared pathways create transport options for pedestrians and cyclists, making Auckland’s motorway network safer, more accessible, and more robust, now and into the future.

Our work

Upgrading – extensive motorway and local road upgrades, including upgrading and widening 4.8km of SH1 from Oteha Valley Rd to Constellation Drive and 2km of SH18.

Upgrades to the dedicated bus stations including the reconstruction of Constellation Bus Station.

Building –

7km of Shared user paths for pedestrians.
4.8km of new separated busway, future proofed for light rail.
10 new bridges.
22,000m2 of retaining walls.

Relocations – of utilities and protection.

Constructing – 14.5km of network drainage including tie ins to existing infrastructure. The Tirohanga Whānui walking and cycling bridge over SH1. A new international hockey stadium, a new international BMX park, and new pony club facilities.

Earthworks – we’ve delivered over 1million m3 of earthworks and granular pavements.

Sustainable Outcomes

This project was a great example of our environment and community values.

It boasted a very high ratio of females to males working in construction, compared to the wider industry. For example, the Rosedale Busway Bridge team was composed entirely of highly experienced women.

Additionally, throughout the project, HEB and the project alliance team collaborated closely with iwi partners to incorporate Matauranga Māori (Māori knowledge) and Māori cultural art into the design.

Chosen design elements draw inspiration from the ancestral use of the area, which was historically a place of safe passage for harvesting kai (food). They are brought to life through thoughtful touches such as the Albany Bus Bridge light poles styled to look like waka hoe (paddles) stroking through water, and retaining walls below the Constellation Busway Bridge representing tributes to Matariki.