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Please Read Before Viewing The following document is the full draft version of the Dongara-Geraldton-Northampton Corridor Alignment Selection Report, written for the purpose of identifying a preferred investigation corridor for further planning activities, including community consultation. The report has not been altered in any way since its provision to the Minister for Transport in September 2020, and no sections of it have been omitted in this presentation. Alignment Selection work is normally assessed through desktop assessments, which provide a reasonable understanding of the constraints, issues and opportunities. The desktop work is used to progress stakeholder discussions to test the validity of shortlisted options, leading to landholder and community input. This community and landholder input is a critical step in the process to fill a number of gaps with regard to constraints/issues and assessment of the options. Only after consultation has been incorporated into the planning process can alignment selection be finalised, allowing for more detailed planning (including site investigations). The report was written on the information available at the time of writing. Main Roads’ current engagement activities have already revealed a number of further constraints and opportunities that require further investigation, which may influence the alignment of the final recommended corridor. Feedback on the report can be directed to: [email protected] HP Records Manager No. Date Published Alignment Selection Report – Dongara Geraldton Northampton – Draft – August 2020 Alignment Selection Report (Draft, Aug 2020) DONGARA – GERALDTON – NORTHAMPTON CORRIDOR HP Records Manager No. D20#642220 – DRAFT REPORT PENDING ENGAGEMENT OUTCOMES Page 2 Alignment Selection Report – Dongara Geraldton Northampton – Draft – August 2020 Document Control This document has the following amendment history: Version Date Author Amendment V.0.0 July 2020 Naomi Mynott (A/RRPM) Draft for internal comment V1.0 07/08/20 Naomi Mynott (A/RRPM) Final draft for endorsement Approvals Name Naomi Mynott Recommended by: Position A/RRPM Date 07/08/2020 Name Owen McLean Position PRPM Date Name Bernie Miller Position RM MWGR Date Reviewed by: Name Markus Botte Position MSRP Date Name Lindsay Broadhurst Position DRP Date Name Doug Morgan Approved by: Position EDPTS Date HP Records Manager No. D20#642220 – DRAFT REPORT PENDING ENGAGEMENT OUTCOMES Page 3 Alignment Selection Report – Dongara Geraldton Northampton – Draft – August 2020 Table of Contents 1. Executive Summary ............................................................................................................. 9 2. Introduction ........................................................................................................................ 11 2.1. Purpose of Study ......................................................................................................................................... 11 2.2. Problem Definition & Planning Objectives ................................................................................................... 11 2.3. Study Area ................................................................................................................................................... 12 2.4. Glossary & Abbreviations ............................................................................................................................ 14 3. Planning Context................................................................................................................ 15 3.1. Background ................................................................................................................................................. 15 3.2. Literature Review ........................................................................................................................................ 16 FEDERAL PLANNING, INITIATIVES & STRATEGIES ..................................................................... 16 STATE & REGIONAL PLANNING, INITIATIVES & STRATEGIES ................................................... 18 LOCAL PLANNING & STRATEGIES ................................................................................................ 21 3.3. Existing Road Network ................................................................................................................................ 28 3.4. Planned Road Network ............................................................................................................................... 29 Pell Bridge Realignment .................................................................................................................... 29 Indian Ocean Drive Coastal Extension .............................................................................................. 29 Dongara Bypass ................................................................................................................................ 29 Greenough Realignment – Bookara Bends, S-bends ....................................................................... 30 Geraldton North South Highway ........................................................................................................ 30 North West Coastal Highway upgrades through Geraldton ............................................................... 32 Oakajee Narngulu Infrastructure Corridor (ONIC) ............................................................................. 32 Northampton Bypass ......................................................................................................................... 34 Summary Planned Road Network ..................................................................................................... 34 3.5. Previous DGNC Planning ............................................................................................................................ 34 Planning Context (pre-2012) .............................................................................................................. 34 Planning 2012 – 2016 ........................................................................................................................ 35 2017 to present .................................................................................................................................. 38 3.6. RAV Network ............................................................................................................................................... 41 High Wide Loads / Over Size Over Mass .......................................................................................... 41 Triple Road Train access (RAV10) .................................................................................................... 42 3.7. Rail Network ................................................................................................................................................ 42 3.8. Port .............................................................................................................................................................. 42 3.9. Geraldton Airport ......................................................................................................................................... 43 4. Traffic and Safety Assessment ......................................................................................... 44 4.1. Current Traffic Demand ............................................................................................................................... 44 Traffic Volumes .................................................................................................................................. 44 Heavy Vehicles .................................................................................................................................. 45 Growth Trends (historical) ................................................................................................................. 45 Seasonal Influence on traffic patterns ............................................................................................... 48 Seasonal Influence on Heavy Vehicles ............................................................................................. 49 4.2. Speed Limits ................................................................................................................................................ 50 HP Records Manager No. D20#642220 – DRAFT REPORT PENDING ENGAGEMENT OUTCOMES Page 4 Alignment Selection Report – Dongara Geraldton Northampton – Draft – August 2020 4.3. Crash History ............................................................................................................................................... 51 Midblock Crashes .............................................................................................................................. 51 Intersection Crashes .......................................................................................................................... 53 4.4. Future Traffic Volumes ................................................................................................................................ 54 5. Road and Infrastructure Corridor Options ....................................................................... 56 5.1. Considerations ............................................................................................................................................ 56 5.2. Geometric Design