The following technical reports have been prepared for the Ōtaki to north of Levin project.


Ō2NL detailed business case, subject to funding approval

Ō2NL summary of consideration of alternatives multi-criteria analysis


Ōtaki to north of Levin – Notices of Requirement and resource consent applications

In November, we lodged the Notices of Requirement and resource consent applications for the new highway and shared use path with Horizons and Greater Wellington Regional Councils, and Horowhenua and Kāpiti Coast District Councils. If approved, these applications reflect the key environmental approvals required for the project to be built.

RMA applications

Ōtaki to north of Levin (Ō2NL) section between Queen Street East and Taraua Road – Notice of Requirement

In February, we lodged a Notice of Requirement (NoR) for a 2km section of the Ō2NL new highway through what is known as the ‘Tara-Ika Growth Area’. This NoR was lodged to provide certainty for the planning processes and route protection.

The NoR for the remaining 22km of new highway will be lodged later in 2022 – this will provide community with more certainty about the location of the new road.

Ō2NL: Section between Queen Street East and Tararua Road – Notice of Requirement for a Designation (February 2022) [PDF, 22 MB]


Ōtaki to north of Levin draft Multi-Criteria Analysis – July/August 2020

Title Download
O2NL new highway 2020 engagement report PDF [PDF, 8.5 MB]
O2NL new highway 2020 engagement summary PDF [PDF, 638 KB]
MCA report: July/August 2020 PDF [PDF, 3.3 MB]
Post-MCA update report: July/August 2020 PDF [PDF, 1.6 MB]
Appendix A: Alignment options report PDF [PDF, 4.5 MB]
Appendix B: MCA workshop attendees PDF [PDF, 72 KB]
Appendix C: Fit with project objectives report PDF [PDF, 877 KB]
Appendix D: Landscape and visual report PDF [PDF, 5.2 MB] 
Appendix E: Ecology report PDF [PDF, 99 MB]
Appendix G: Archaeology report PDF [PDF, 43 MB]
Appendix H: Noise and vibration report PDF [PDF, 208 KB]
Appendix I: Productive land values report PDF [PDF, 5.9 MB]
Appendix J: Social impacts powerpoints PDF [PDF, 3.7 MB]
Appendix K: HDC development and fit with local roads report PDF [PDF, 609 KB]
Appendix L: KCDC alignment memo PDF [PDF, 258 KB]
Appendix M: Engineering degree of difficulty PDF [PDF, 283 KB]
Appendix N: Property degree of difficulty PDF [PDF, 21 MB] 
Appendix O: Interchange options report PDF [PDF, 1.1 MB] 
Appendix P: Local road options report PDF [PDF, 1.2 MB]
Appendix Q: Long list of local road options PDF [PDF, 72 KB] 
Appendix R: KCDC local roads memo PDF [PDF, 339 KB]


Ōtaki to north of Levin indicative Business Case – December 2018

Title Download
Ōtaki to north of Levin Indicative Business Case (excludes appendices) PDF [PDF, 10 MB]
Appendix A: Previous investigations PDF [PDF, 749 KB]
Appendix B: Stakeholders and partners PDF [PDF, 95 KB]
Appendix C: Problems development PDF [PDF, 97 KB]
Appendix D: Noise assessment PDF [PDF, 1.5 MB]
Appendix E: Social impact assessment PDF [PDF, 2.2 MB]
Appendix F: Multi criteria analysis report (previously published separately) PDF [PDF, 83 MB]
Appendix G: Peer review of multi criteria analysis PDF [PDF, 11 MB]
Appendix H: Modelling options report PDF [PDF, 73 MB]
Appendix I: Design philosophy statement PDF [PDF, 101 KB]
Appendix J: Economic evaluation summary PDF [PDF, 226 KB]
Appendix K: Cost estimates PDF [PDF, 225 KB]
Appendix L: Engagement report PDF [PDF, 22 MB]
Appendix M: Independent re-evaluation report PDF [PDF, 4 MB]


Title Date Download
Ōtaki to north of Levin re-evaluation summary report September 2018 PDF [PDF, 1.3 MB]
Implications of route options on Levin Urban Growth Area March 2018 PDF [PDF, 2.8 MB]
Project update on shortlist for consultation February 2018 PDF [PDF, 5.1 MB]
June 2017 engagement – summary of key points February 2018 PDF [PDF, 4 MB]
Consultation options briefing – Proposed short list options for January – March 2018 Engagement Exercises January 2018 PDF

Google Earth file

Any electronic information is susceptible to errors or corruption and in the event of any discrepancies between the electronic data files and the hardcopy of such, the hardcopy shall govern.  NZ Transport Agency and Stantec are not liable for any claims or costs resulting from the modification of the electronic data by any third party.

Title Date Download
Preferred corridor alignment KMZ – Google Earth file December 2018 KMZ(external link)
Consultation corridor alignments KMZ – Google Earth file February 2018 KMZ(external link)


Ō2NL Community Multi-Criteria Analysis (MCA) Report – September 2017

Title Download
Ō2NL Community Multi-Criteria Analysis (MCA) Report (excludes appendices) PDF [PDF, 2 MB]
Appendix A–E
  • Appendix A: MCA Powerpoint for PRG meeting
  • Appendix B: Workshop 1 – information and notes
  • Appendix C: Workshop 2 – information and notes
  • Appendix D: Landscape and Visual Workshop – background notes
  • Appendix E: Ecology Workshop – background notes, with addendum
PDF [PDF, 15 MB]
Appendix F
  • Appendix F: Heritage Workshop – background notes
PDF [PDF, 28 MB]
Appendix G–O
  • Appendix G: Tangata Whenua Values Workshop – background notes
  • Appendix H: Productive Land Workshop – background notes
  • Appendix I: Social/Community/Recreation Workshop – background notes
  • Appendix J: Dwellings and Property Workshop – background notes
  • Appendix K: District Development Workshop – background notes
  • Appendix L: Project Objectives Workshop – background notes
  • Appendix M: Engineering Degree of Difficulty and Cost Workshop – background notes
  • Appendix N: Notes on Combined Route Selection
  • Appendix O: Graphs showing order of favourability of combined route options under different weighting systems
PDF [PDF, 20 MB]
Appendix P
  • Appendix P: Review of Productive Land Criterion
PDF [PDF, 20 MB]

Ō2NL SH1 interim safety improvements

Title Date Download
Ō2NL SH1 interim safety improvements September 2017 PDF [PDF, 6 MB]

Preliminary economics (construction) and retail effects assessment

This report provides a preliminary assessment of the economic effects of the Ō2NL project during construction and, when the road is open, on Levin town centre. The assessment of effects on the town centre does not account for predicted population growth or any town centre development/changes.

Title Date Download
High level summary – Preliminary assessment of the economic effects of the Ō2NL project (construction activity and Levin retail centre effects) August 2017 PDF
Preliminary economics (construction) and retail effects assessment August 2017 PDF [PDF, 1.4 MB]

Constraints maps – August 2017

Title Download
1 Geography PDF [PDF, 4.2 MB]
2 Landscape/Urban Design Quality PDF [PDF, 3.6 MB]
3 Landscape Absorption Capability PDF [PDF, 3.6 MB]
4 Landscape Features PDF [PDF, 3.9 MB]
5 Heritage Areas PDF [PDF, 3.6 MB]
5A Archaeological Risk PDF [PDF, 3.5 MB]
6 Tangata Whenua Areas of Significance PDF [PDF, 2 MB]
7 Lifelines PDF [PDF, 3.9 MB]
8 Population Distribution PDF [PDF, 4.3 MB]
9 Geological Constraints PDF [PDF, 3.8 MB]
10 Natural Hazards PDF [PDF, 4.5 MB]
11 Flooding PDF [PDF, 4.7 MB]
12 Ecological Areas PDF [PDF, 4 MB]
12A Protected Areas PDF [PDF, 1.6 MB]
13 Land Use Capability PDF [PDF, 3.8 MB]
14 Land Ownership PDF [PDF, 2 MB]
15 District and Regional Plans PDF [PDF, 3.5 MB]
16 Contaminated Land Hazards PDF [PDF, 3.9 MB]
17 Contours PDF [PDF, 5.6 MB]

Engagement summary report

Title Date Download
SH1 Ōtaki to north of Levin: Engagement summary report August 2017 PDF [PDF, 5.8 MB]

Waiopehu College cycling research

In 2017 students from Waiopehu College undertook research on cycling in the project area. This information will be used as the project moves into the design phase.

Title Download
Ōtaki to north of Levin project cycleway presentation PDF [PDF, 726 KB]
AS91430: Cycleways PDF [PDF, 816 KB]
Cycleways Horowhenua PDF [PDF, 223 KB]
Geo Cycleways Assessment PDF [PDF, 250 KB]


Taylors Road to Levin Northern Connection – Report on identification and assessment of options – November 2016

Title Download
Taylors Road to Levin Northern Connection – Report on identification and assessment of options (excludes appendices) PDF [PDF, 2.9 MB]
Appendix A–C
  • Appendix A: List of previous relevant reports
  • Appendix B: Briefing note for first workshop
  • Appendix C: Notes from first workshop – 3 August 2016
PDF [PDF, 196 KB]
Appendix D
  • Appendix D: Information from technical experts for first workshop
PDF [PDF, 18 MB]
Appendix E–H
  • Appendix E: Route options, Stage 2 process
  • Appendix F: Briefing note and agenda for second workshop
  • Appendix G: Notes from second workshop – 16 September 2016
  • Appendix H: Information from technical experts for Northern Corridor MCA
PDF [PDF, 25 MB]
Appendix I–M
  • Appendix I: Graphic representation of analysis of southern and northern route options - NC1 to NC1
  • Appendix J: Agenda, briefing note and background note for the third workshop
  • Appendix K: Notes from third workshop – 25 October 2016
  • Appendix L: Information from technical experts for combined route/interchange MCA
  • Appendix M: Implications of route options to east of Levin


Technical assessment and investigation reports

Title Date Download
Programme Business Case North of Levin improvements November 2015 PDF [PDF, 11 MB]
Detailed Business Case for Implementation: SH1 Waitārere Beach Road curves November 2015 PDF [PDF, 7.9 MB]
SH1-SH57 connection and SH57 – Intersections Options Assessment Report February 2015 PDF [PDF, 6.4 MB]

Taylors Road to Ōhau River Four Laning

Title Date Download
Taylors Road to Ōhau River Four Laning – Further Options Report (excludes appendices) September 2015 PDF [PDF, 1.4 MB]
Appendix 1–5
  • Appendix 1: Route options in first stage analysis
  • Appendix 2: Notes for technical investigations and workshop material
  • Appendix 3: Graphic representation of MCA outcomes (scores X weightings) with and without costs
  • Appendix 4: Landscape, visual and urban design report
  • Appendix 5: Ecological letter report
September 2015 PDF [PDF, 7.3 MB]
Appendix 6
  • Appendix 6: Archaeological assessment
September 2015 PDF [PDF, 15 MB]
Appendix 7–9
  • Appendix 7: Cultural assessment
  • Appendix 8: Productive land report
  • Appendix 9: Engineering degree of difficulty notes
September 2015 PDF [PDF, 4.6 MB]
Appendix 10
  • Appendix 10: Route options in second stage analysis
September 2015 PDF [PDF, 16 MB]
Appendix 11–15
  • Appendix 11: Notes from preliminary review of options in second stage
  • Appendix 12: Delphi instructions for participants
  • Appendix 13: Technical experts' comments for Delphi analysis
  • Appendix 14: Tabular and graphic representation of various analyses, including sensitivity analyses
  • Appendix 15: Additional evaluations – air quality and noise
September 2015 PDF [PDF, 13 MB]
Taylors Road to Ōhau River Four Laning – Preliminary Options Report and Addendum April 2015 PDF [PDF, 3.3 MB]


Investigation reports

Title Date Download
SH1-SH57 connection scoping report November 2013 PDF [PDF, 3.2 MB]
  Appendix D: Traffic Data November 2013 PDF [PDF, 7.3 MB]
Appendix G: SH1-SH57 Scoping Drawings November 2013 PDF [PDF, 5.8 MB]
Appendix J: SH1-SH57 Connection Report on Multi-Criteria Analysis of options November 2013 PDF [PDF, 4.4 MB]
Appendix 5 to Appendix J: An assessment of the archaeology risks associated with propose upgrades to the connection of SH1 and SH57 October 2013 PDF [PDF, 9.1 MB]
Manakau & Ōhau Villages Scheme Assessment Report November 2013 PDF [PDF, 5.1 MB]
  Ōhau Scheme Assessment Drawings November 2013 PDF [PDF, 6.3 MB]
Manakau Scheme Assessment Drawings November 2013 PDF [PDF, 8.3 MB]

Project feasibility reports

Title Date Download
Levin Bypass November 2013 PDF [PDF, 5 MB]
Appendix E: Levin Bypass – Traffic data November 2013 PDF [PDF, 3.1 MB]
1 Forest Lakes April 2013 PDF [PDF, 2.5 MB]
2 Manakau settlement February 2013 PDF [PDF, 2.4 MB]
3 Manakau to Ōhau Bridges February 2013 PDF [PDF, 2.6 MB]
4 Ōhau settlement February 2013 PDF [PDF, 2.2 MB]
5 SH1/SH57 Intersection and Arapaepae Curve April 2013 PDF [PDF, 3.2 MB]
6 Levin heavy vehicle bypass February 2013 PDF [PDF, 1.8 MB]
7 Levin signals February 2013 PDF [PDF, 3.4 MB]
8 Waitārere Beach Road curves February 2013 PDF [PDF, 1.5 MB]
9 Whirokino trestle February 2013 PDF [PDF, 7.4 MB]
10 SH57/Queen Street East Intersection April 2013 PDF [PDF, 5.3 MB]
11 Route improvements February 2013 PDF [PDF, 649 KB]
12 Four lane investigation February 2013 PDF [PDF, 4.2 MB]


Scoping report – July 2012

Title Download
Ōtaki to north of Levin Expressway – Scoping report PDF [PDF, 3.6 MB]
Appendix A–D
  • Appendix A: Location Plan
  • Appendix B: Traffic Surveys and Volume Data
  • Appendix C: Crash Data
  • Appendix D: Constraint Maps
PDF [PDF, 5.8 MB]
Appendix E–F
  • Appendix E: Report on Central Corridor through Levin
  • Appendix F: Additional Maps for Corridor Analysis
PDF [PDF, 9.5 MB]
Appendix G–J
  • Appendix G: Typical Cross Sections
  • Appendix H: Checklist of TDM Measures
  • Appendix I: Urban Design and Landscape Principles
  • Appendix J: Contiguous Corridors for Further Analysis
PDF [PDF, 6.6 MB]
Appendix K–N
  • Appendix K: QUANTM Alignments
  • Appendix L: Short Listed Options
  • Appendix M: Geotechnical Information and Investigations
  • Appendix N: Cost Estimates
PDF [PDF, 3.7 MB]
Appendix O
  • Appendix O: SATURN Modelling Results
PDF [PDF, 7.5 MB]
Appendix P–R
  • Appendix P Economic Evaluation Worksheets and Peer Review
  • Appendix Q Social and Environmental Screen
  • Appendix R Risk File
PDF [PDF, 976 KB]
  • Addendum to Scoping Report
PDF [PDF, 5.7 MB]

Consultation reports

Various consultation reports on the Ōtaki to north of Levin section of the Wellington Northern Corridor.

Title Published date Download
Ōtaki to North Levin project consultation report: Consultation stages 1-3 August 2013 PDF [PDF, 14 MB]
Ōtaki to North Levin project consultation report: Consultation stage 4 April 2014 PDF [PDF, 9.6 MB]
Ōtaki to North Levin project consultation report: Consultation stage 4 (part two) April 2014–November 2015 Feburary 2016 PDF [PDF, 18 MB]