A new benchmark for integrated transport infrastructure.

Delivered in joint venture with McConnell Dowell, Puhinui Station Interchange transformed an existing suburban rail station into one of Auckland’s most significant public transport hubs. As a key part of the Southwest Gateway Programme, the project improves connections between Auckland Airport, South Auckland and the CBD while supporting more sustainable transport across the region.

Delivered under an Early Contractor Involvement (ECI) model, the project included a new elevated station concourse, footbridge, bus interchange, passenger facilities, cycling infrastructure and extensive public realm upgrades. Constructed directly above a live rail corridor, the interchange was delivered without disrupting rail operations, demonstrating the value of early collaboration, innovative engineering and meticulous planning.

Early collaboration drove better outcomes

Working alongside Auckland Transport, KiwiRail, Jasmax, Aurecon and key trade partners from the earliest stages of design allowed the team to optimise construction methodologies, improve buildability and reduce delivery risk before works commenced.

This collaborative ECI approach also enabled early procurement, design refinement and value engineering while maintaining the architect’s vision for the station’s distinctive curved roof and passenger experience.

Building above a live rail corridor

Working above an operational rail line required an innovative approach. Built Environs and McConnell Dowell developed New Zealand’s first Rail Protection Shield, enabling construction to continue safely without extended rail shutdowns while maintaining uninterrupted rail services throughout the project.

New Zealand’s first ‘rail protection deck’ was designed and used to enable work over a live 25,000KV line

Creating lasting community value

Beyond the physical infrastructure, the project delivered significant social and economic outcomes for the local community.

The project delivered meaningful social and economic outcomes, achieving almost five times the original target for local priority business spend. Nearly $1 million was also invested with Māori, Pasifika and locally owned businesses, alongside initiatives that supported local employment, supplier development and community engagement.

Winner 2022 Auckland Public Architecture Award