NZ InfraWatch
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TRANSPORT
Christchurch Northern Corridor — Extension
Waka Kotahi NZ Transport Agency · Canterbury
Extension of the Northern Motorway (SH1) from Cranford St to Groynes Drive, reducing congestion on the northern corridor into Christchurch city. Part of the NZTA's State Highway programme. Planning stage.
C
63/100 · Uncertain
Completion Probability — likelihood this proceeds on roughly its stated timeline.
Funding statusweight 30%
Delivery stageweight 25%
Election / policy riskweight 20%
Govt priority alignmentweight 12%
Project scaleweight 8%
Delivery agencyweight 5%
Key facts
- Region
- Canterbury
- Sector
- Transport
- Status
- Planning
- Estimated value
- $900m
- Indicative completion
- 2028
- Funding status
- Part Funded
- Lead organisation
- Waka Kotahi NZ Transport Agency
- Election risk
- Medium
Election risk assessment
Road project aligned with current government's RoNS priorities but not yet funded.
Government priority alignment
HIGH — State highway extension in the RoNS/NLTP programme — GPS roads priority.
Chronology
- 2012Post-earthquake transport planning identifies northern arterial as priority for Christchurch recovery
- 2018Route designation confirmed from Cranford St to Groynes Drive
- 2021Business case complete. Stage 1 (Cranford to Innes Rd) consented
- 2024Included in NLTP as Roads of National Significance planning project
- 2028Target completion for initial sections