Mott MacDonald has supported the NZ Transport Agency (NZTA) - which is also called Waka Kotahi - in developing the Auckland Motorway Strategic Plan (AMSP), a strategy designed to guide the region’s motorway network over the next 30-plus years as Auckland’s population grows.
Mott MacDonald acted as lead consultant, working with sub-consultants Arup and SMEC to develop a strategic framework and investment roadmap for the AMSP. The work brought together transport planning, modelling, operations, economics and stakeholder engagement expertise.
Working closely with NZTA and key partners, the team applied a decision-led planning approach to turn complex technical evidence into a practical, long-term strategy for Auckland’s motorway network.
Since the mid-1950s, Auckland’s motorway network has played a key role in the region’s land transport system. The network extends more than 170km and carries more than 1.5M trips each day.
It is also important to the wider Upper North Island, connecting Auckland’s communities and supporting New Zealand’s economy through links to the Port of Auckland and Auckland Airport.
The AMSP provides decision makers with a suite of investment options, supporting upcoming planning for Auckland’s 30-year transport plan and guiding regional and national transport priorities.
It focuses on three core outcomes: optimising the existing network, targeted increases in capacity and wider system improvements.
Auckland Mayor Wayne Brown said: “People and businesses want to spend less time stuck in traffic and more time getting where they need to go.
“This plan recognises that we can’t simply keep widening motorways forever. We need to make better use of the network we’ve got through optimisation and investing in small, sensible projects that will make the biggest difference for Aucklanders.
He added: “It’s also about making sure roads, public transport, freight and the wider transport network work together to keep Auckland moving as the city grows.”
Mott MacDonald managing director in New Zealand Mike O’Halloran said: “The AMSP represents a step change in how Auckland plans, prioritises and invests in the future of its motorway network.
“By taking a whole-of-system approach, the plan provides a clear, long-term framework to improve performance, resilience and sustainability, while making the most of existing infrastructure.”
He added: “We’re proud to have supported NZTA in delivering this important piece of work, helping shape how people and freight will move across the region for decades to come.”
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Facts Only
* Mott MacDonald supported the NZ Transport Agency (NZTA), also called Waka Kotahi, in developing the Auckland Motorway Strategic Plan (AMSP).
* Mott MacDonald acted as lead consultant, working with Arup and SMEC on the AMSP.
* The work developed a strategic framework and investment roadmap for the AMSP.
* The process incorporated expertise in transport planning, modelling, operations, economics, and stakeholder engagement.
* The network under review extends over 170km and carries more than 1.5 million trips daily.
* The motorway network is important for the wider Upper North Island, connecting communities and supporting economic links to the Port of Auckland and Auckland Airport.
* The AMSP provides investment options guiding the 30-year transport plan.
* The core outcomes focus on optimizing the existing network, targeted capacity increases, and system improvements.
Executive Summary
Mott MacDonald provided lead consultancy for the New Zealand Transport Agency (NZTA) - also known as Waka Kotahi, in developing the Auckland Motorway Strategic Plan (AMSP). This work involved collaborating with sub-consultants Arup and SMEC to create a strategic framework and investment roadmap. The project integrated expertise in transport planning, modelling, operations, economics, and stakeholder engagement using a decision-led approach to translate technical evidence into a long-term strategy for the Auckland motorway network.
The existing Auckland motorway network spans over 170km and handles more than 1.5 million daily trips. This network also connects Auckland's communities and supports the wider Upper North Island economy via links to the Port of Auckland and Auckland Airport. The AMSP offers decision-makers investment options for the next 30 years, focusing on three core outcomes: optimizing the existing network, increasing capacity, and implementing wider system improvements.
Key stakeholders emphasized the need for optimization and smart investment rather than perpetual widening. The Mayor stated that the plan recognizes the need to utilize the existing network effectively through optimization and sensible projects, ensuring roads, public transport, freight, and the wider network work cohesively as the city grows. Mott MacDonald's managing director characterized the AMSP as a shift in how Auckland plans, prioritizing performance, resilience, and sustainability by adopting a whole-of-system approach.
Full Take
The narrative centers on shifting from incremental infrastructure expansion to holistic system management within a constrained physical space. The tension lies between the historical reliance on widening infrastructure (implied by the need for investment) and the new strategic mandate emphasizing optimization and network synergy. This frames transport infrastructure not merely as a collection of roads, but as an integrated logistical and economic system that must balance competing demands from population growth, freight movement, and social mobility.
The emphasis placed by leaders on "optimisation" over "widening" reflects a recognized systemic constraint: physical space is finite, making efficiency the primary lever for future growth. The shift to a whole-of-system approach suggests a recognition that transport performance is constrained less by physical road capacity alone and more by intermodal friction (roads vs. public transit vs. freight). The implication for decision-makers is that prioritizing specific, sensible projects may yield greater societal benefits than simply increasing throughput on existing corridors.
This pattern speaks to a broader challenge in managing regional development: how to sustain economic vitality when physical constraints are present. It suggests that successful planning requires valuing systemic connections and operational efficiency as much as raw capacity expansion. The missing element for deeper analysis is the specific trade-offs made between optimizing existing assets and funding new, less direct infrastructure solutions, and how stakeholder engagement translates into equitable distribution of these benefits across the region.
Sentinel — Human
The text appears to be a standard journalistic summary of a consultation or strategic planning project, characterized by factual reporting and direct attribution.