M3 junction 9 improvements
We’re proposing to change junction 9, so it has free-flowing links between the M3 and the A34 in both directions
Project information
The M3 connects south Hampshire with London, the Midlands and the North.
Traffic levels are heavy at junction 9 between the M3 and A34, resulting in lengthy queues on the northbound off-slip of the M3 and A272 Spitfire Link, affecting journey times and road safety.
We’re proposing to change the junction so that it has free-flowing links between the M3 and the A34 in both directions.
Our proposals would also see the junction widened and two new bridges build on the gyratory, allowing the M3 to increase from 3 lanes to 4 as it passes through the junction.
We’ll also extended the southbound slip onto the M3 so traffic has more time to join the motorway and improve the safety of the junction with upgraded signs and gantries.
Walker, cyclists and horse-riders will also benefit from our scheme with non-motorised routes connecting Kings Worthy and Winnall and Long Walk and Easton Lane.
Find out more in our information portal
Our scheme will
- Improve safety, journey times and air quality
- Reduce congestion and noise levels
- Provide better routes for walkers, cyclists and horse riders
- Increase road capacity and support economic growth
Our improvements will provide a safer and more integrated network, bringing real benefits to people who use this junction daily.
We hosted a series of webinars in June 2021. Below are links to the recordings:
- Webinar 1 – Introduction to the Proposed Scheme and Next Steps
- Webinar 2 – Our Proposals: What we are planning to do
- Webinar 3 – Our Effect on the Environment: An Overview
- Webinar 4 – Our Effect on the Environment: Landscape, Habitats and Wildlife
- Webinar 5 – Our Effect on the Environment: Air Quality and Noise
If the subtitles do not automatically appear when you open the video, you can click on the 'Settings' icon (in the bottom right corner of the You-tube video screen), click on 'Subtitles', then select 'English.
Documents
Public Consultation Feedback Questionnaire
Consultation Exhibition Boards
Indicative General Arrangement
Indicative Application Boundary
Environmental Mitigation Design Plan
Walking and Cycling Proposals Plan
Preliminary Environmental Information Report - Non-Technical Summary 1 of 2
Preliminary Environmental Information Report - Non-Technical Summary 2 of 2
Preliminary Environmental Information Report (PEIR)
PEIR Appendix 2.1 General Figures 1 of 2
PEIR Appendix 2.1 General Figures 2 of 2
PEIR Appendix 5.1 Air Quality Figures 1 of 6
PEIR Appendix 5.1 Air Quality Figures 2 of 6
PEIR Appendix 5.1 Air Quality Figures 3 of 6
PEIR Appendix 5.1 Air Quality Figures 4 of 6
PEIR Appendix 5.1 Air Quality Figures 5 of 6
PEIR Appendix 5.1 Air Quality Figures 6 of 6
PEIR Appendix 6.1 Detailed Cultural Heritage Baseline
PEIR Appendix 6.2 Geophysical Survey Summary Report
PEIR Appendix 6.3 Archaeological Evaluation Report
PEIR Appendix 6.4 Geophysical Survey Report
PEIR Appendix 7.1 Landscape and Visual Figures 1 of 3
PEIR Appendix 7.1 Landscape and Visual Figures 2 of 3
PEIR Appendix 7.1 Landscape and Visual Figures 3 of 3
PEIR Appendix 8.1 Biodiversity Figures
PEIR Appendix 8.2 Baseline Reports 1 of 5
PEIR Appendix 8.2 Baseline Reports 2 of 5
PEIR Appendix 8.2 Baseline Reports 3 of 5
PEIR Appendix 8.2 Baseline Reports 4 of 5
PEIR Appendix 8.2 Baseline Reports 5 of 5
PEIR Appendix 10.1 Material Assets and Waste Figures
PEIR Appendix 11.1 Noise and Vibration Figures
PEIR Appendix 12.1 Population and Health Figures
PEIR Appendix 13.1 Road Drainage & the Water Environment Figures
PEIR Appendix 14.1 Climate Projections Data
PEIR Appendix 15.1 Long List of 'other development'
PEIR Appendix 15.2 Short List of 'other development'
M3 junction 9 improvements - public consultation summary report
Consultation Brochure (2019)
Response Questionnaire (2019)
Statement of Community Consultation (2019)
S47 notice
S48 notice
Indicative Assessment of Scheme
Scheme Assessment Report - Appendices A-E
Scheme Assessment Report - Appendices F-H
Stage 2 Scheme Assessment Report
Proposed Scheme Drawing
Scheme Context Plan
https://www.gov.uk/government/publications/your-property-and-highways-england-road-proposals
https://www.gov.uk/government/publications/your-property-and-discretionary-purchase
https://www.gov.uk/government/publications/your-property-and-blight
https://www.gov.uk/government/publications/your-property-and-compulsory-purchase-by-highways-england
https://www.gov.uk/government/publications/a-guide-to-part-i-claims
Related Road projects

Traffic information
Information about scheduled roadworks and events on our motorways and major roads.X
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