Transport Advocates Map Out $12 Billion South Island Funding Plan
Transport advocates have outlined a ten-year, $12 billion investment strategy to tackle regional infrastructure gaps, driven by the realization that aligning National Land Transport Fund spending with South Island demographics would have generated an extra $1.2 billion in expenditure over the past year alone.
Allocation of the First Two Years for Urban Networks
In the short term, addressing funding deficits requires directing $75 million annually for two years toward Christchurch’s Major Cycle Route system. Up until the 2023 election, NZTA funded approximately 51 percent of each project. Under this proposed schedule, the agency would absorb the majority of the remaining costs to ease the financial burden on ratepayers. Alongside cycling infrastructure, reinstating and increasing funding for Christchurch’s PT Futures programme to support service upgrades on major routes. This adjustment aligns with the push from ECan Chair Deon Swiggs for enhanced public transport corridors. Allocating an additional $200M/year into investments in sensible public transport in Nelson, Dunedin, Queenstown, and Invercargill for two years brings the initial short-term expenditure to $750M/$12B out of the $12 billion pool.
Canterbury Bridge Replacements Receive Priority Funding
Medium-term spending draws from Simpson Grierson and Infrastructure New Zealand’s white paper, Connecting Canterbury: Strengthening Infrastructure for Growth, which identifies bridge and culvert replacement as a top priority for network resilience. Recent flooding events across Canterbury highlight vulnerabilities in these crossing points. Central Hawkes Bay mayor Will Foley has advocated for standardised and modular bridge designs to facilitate mass replacement nationwide. Channeling $600M/year for four years exclusively into these replacements forms the core of the medium-term strategy. This phase also covers initial property acquisitions and final planning for Christchurch’s Mass Rapid Transit programme, backed by $200M/year for two years, bringing cumulative spending to $3.55B/$12B.
Funding Christchurch Mass Rapid Transit and Rail Infrastructure
Long-term execution centers on fully funding the Mass Rapid Transit programme in Christchurch, spanning from Belfast to Hornby via the Central City, Papanui, and Riccarton. While light rail carries higher initial capital costs due to corridor requirements and permanent infrastructure, its cost-benefit ratio sits at approximately 2.8. Realistically, construction on Phase One of the project is unlikely to begin before 2030 given the remaining design and corridor identification work. Because capital costs are projected near $4B, the strategy designates $500M from years 7 to 10 to cover cost overruns, which works alongside the $400M already deployed during the medium-term phase. Concurrently, dedicating funding to South Island rail infrastructure targets key track upgrades, intercity rail between Christchurch and Invercargill, and a core commuter rail network.
Maintenance across the wider network demands dedicated capital to counter weather-related damage, including storm-induced potholes on State Highway 1 around Mid-Canterbury and closures along State Highway 6. Design shifts, such as converting dangerous corridors into Swedish-style 2+1 roads featuring continuous three-lane layouts separated by wire median barriers, offer safety improvements without requiring extensive carriageway widening. Bringing this $12 billion strategy to fruition requires additional funding brought in from both the regional councils of the Greater Christchurch area and the Crown, while addressing climate-related damage and heavier trucks that wear down the existing network.
