M3 Junction 10 (Chilcomb, Winchester)
Junction 10 sits on the eastern edge of Winchester at Chilcomb, in the cutting through Twyford Down. The two stretches meeting here carry more lorries than anywhere else on the M3.
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Latest accident or incident on the M3
The most recent accident or incident on the M3 that we are aware of.
M3 Eastbound Jct 2 to Jct 1 carriageway closure
00:462 Sept 2026reported 10 min ago
- Location
- M3 eastbound between J2 and J1
- Direction
- Eastbound
- Lanes closed
- Carriageway closed
- Reason
- Other
- Schedule
- 22:00 Tue 1 Sept → 05:30 Wed 2 Sept
Latest active roadworks on the M3
Roadworks live on the M3 right now.
A303 eastbound crematorium to M3 carriageway closure
00:462 Sept 2026reported 10 min ago
- Location
- M3 eastbound between J8 and J7
- Direction
- Eastbound
- Lanes closed
- Carriageway closed
- Reason
- Roadworks
- Schedule
- 20:54 Tue 1 Sept → 06:00 Wed 2 Sept
+ 1 more active roadworks - search all M3 traffic news →
Latest planned roadworks on the M3
The next planned roadworks scheduled on the M3.
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Updated 00:57 Wed 2 Sept
Powered by National Highways’ Transport Data Feeds.
How busy is the M3 at Junction 10?
Both stretches either side of Junction 10 are physically counted by the Department for Transport. These are the 2025 figures.
| Stretch | Length | Vehicles per day | Lorries | Lorry share |
|---|---|---|---|---|
| J9 down to J10 | 1.4 miles | 110,741 | 10,404 | 9.4% |
| J10 to J11 Compton | 0.8 miles | 126,217 | 11,545 | 9.1% |
The short run from J10 to J11 is the 4th busiest of the 24 links the Department for Transport measures on the M3, and it carries more lorries than any other — 11,545 a day. The stretch immediately above it has the highest lorry share at 9.4%. Two different measures, two different answers, and both matter if you drive this road: volume tells you how full it is, share tells you what you will be sharing it with.
It is also the most evenly balanced stretch on the whole motorway — 63,364 one way against 62,853 the other, a difference of just 0.8%. This piece of road is busy in both directions, all day.
Vans add a further 21,990 a day. Together, lorries and vans are more than one vehicle in four here.