Coordinating Canterbury’s infrastructure

Well over a decade on from the earthquakes, Canterbury’s infrastructure moves into an exciting future-focused chapter. Yet Canterbury’s infrastructure leaders warn that ageing bridges, fragile freight links and outdated funding models put the region’s future at risk.

A new White Paper, Connecting Canterbury: Strengthening Infrastructure for Growth, prepared by Simpson Grierson and Infrastructure New Zealand with input from iwi, councils and the private sector, calls for a regionwide approach to infrastructure planning and renewal.

Catherine Shipton, Infrastructure Partner at Simpson Grierson in Canterbury, says the region can lead nationally, if it acts decisively.

“Canterbury has an opportunity to set the standard in asset management and climate resilience. But that requires central government, councils, iwi and the private sector to align around a coordinated, long-term programme – not isolated projects.”

The report highlights the scale of the challenge. In one Canterbury district alone, around 100 bridges will need replacement within 30 years at an estimated cost of $400 million. Current funding covers only a fraction of that, creating what industry leaders say is a sustainability gap that local rates alone cannot fill.

Nick Leggett, Chief Executive of Infrastructure New Zealand, says the numbers reveal a systemic issue and that we mustn’t mistake managed decline for resilience. “In parts of Canterbury, we have hundreds of millions of dollars’ worth of bridge assets, with dozens requiring replacement within a generation. The current funding model does not match the scale or lifespan of these assets.”

To close that gap, the White Paper proposes bundling renewal projects into regionwide programmes to achieve scale and attract private capital, backed by a Canterbury Infrastructure Coordination Group to align local and national priorities. It also encourages the use of alternative tools such as public–private partnerships, value capture, and asset recycling.

With freight corridors, ports, and digital systems supporting key industries from manufacturing and agriculture to tourism and aerospace, leaders warn that delay could threaten the very networks that drive Canterbury’s prosperity.

Shipton says the proposal is about preparing for growth, and that the region’s capabilities were proven in the rebuild. “The challenge now is applying the same discipline to safeguarding the region’s lifelines.”