This video is the official National Highways fly‑through animation for the M3 Junction 9 Improvement Scheme near Winchester.
All footage and graphics in this video are the property of National Highways.
This upload is for informational and educational purposes, helping viewers understand how the redesigned junction will function once complete.
The fly‑through provides a detailed look at the future layout, including the new free‑flow links between the M3 and A34, upgraded gyratory bridges, improved walking and cycling routes, and the widened M3 through‑junction capacity.
🛣️ What the Fly‑Through Shows
• New free‑flow slip roads between the M3 and A34
• Two new gyratory bridges replacing the existing structures
• Widening of the M3 through the junction
• Redesigned roundabout and traffic flow
• Safer, more direct walking, cycling, and horse‑riding routes
• Improved access to Winchester, Kings Worthy, and the A272
• Environmental and landscape integration around the South Downs National Park
📘 About the M3 Junction 9 Improvement Scheme
National Highways is upgrading this critical interchange to:
• Reduce congestion and improve journey times
• Support freight movement between the South Coast ports and the Midlands
• Enable local housing and economic growth
• Improve safety and resilience
• Enhance active‑travel connections
The scheme is scheduled within Road Period 3 (2025–2030).
🔗 Official Sources & Further Information
For full details, visit National Highways:
https://nationalhighways.co.uk/our-roads/south-east/m3-junction-9-improvements/ (nationalhighways.co.uk in Bing)
Planning Inspectorate (DCO) Project Page:
https://national-infrastructure-consenting.planninginspectorate.gov.uk/projects/TR010055 (national-infrastructure-consenting.planninginspectorate.gov.uk in Bing)
Government announcement on scheme approval:
https://www.gov.uk/government/news/greenlight-for-290-million-improvements-to-m3-to-support-over-2000-homes-in-winchester (gov.uk in Bing)
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#M3Junction9 #NationalHighways #FlyThrough #M3Upgrade #A34 #Winchester #UKInfrastructure #RoadImprovements #TransportUK #FutureLayout
9 Comments
Waoh-hoah ! Back on M3 J9 !
It's a bit jerky though – if you're goign to edit it and splice it, may I suggest using a fade through rather than a hard scene change ?
Looking forward to some aerial shots, I know they closed J9 over the last weekend too (13-14 June 2026). Haven't been past yet to see what it was closed for.
Ill take bets on a 50mph limit and average speed scameras once its built…
Still going to get stuck going into Winchester
Now it makes sense.
Anyone who used this atea or lived nearby knew that the original junction layout would be a fiasco and cause lengthy queues. There should have been continuous free-flowing sliproads from the start. Complete DoT incompetence over many years, same as M25-A3 junction
And it'll only cost a third of a billion………..
Good job we have no national debt crisis on the horizon……….
This should have been done years ago. And why is the M3 north of this still only 2 lanes FFS?
Its going to cause major traffic disruption until around 2030. The official finish date is 2028, I was told by a Highways Agency employee, its very doubtful it will be finished before late 2029 at the earliest. Apparently its running behind already. I use it regularly, on Saturday the 13th June, there were no people working on the site, it should be 24/7. They have put signs up, stating if you cannot see us working, its because were working out of sight! yeah right.
When they built the first section of the M1 they started building in March 1958 and opened it in November 1958, 72 miles in well under 2 years, over 4000 workers were on site at any time, sometimes up to 6000. The recent M27 resurfacing of the old concrete road, (just to keep property developers happy?) ended up £35.000.000 over its initial £48 million budget, they will not give a figure showing how much extra time the project took, as its not really completed now. It appears 35000 drivers were prosecuted for speeding offences during the roads construction, that could be as much as £3.5 million to the treasury. As the speed restrictions are still in place, they are likely still earning from it.
But the cycle network….