Road closed
M3 northbound Jct 10 to Jct 8 carriageway closure
until 06:00
Closed now
🚨 Live M3 Incidents & Roadworks
Auto-refresh 3 min🛑 ROAD CLOSED
M3 northbound Jct 10 to Jct 8 carriageway closure
Northbound · Closed until 06:00 9 hours
Closure
M3 northbound Jct 13 to Jct 12 carriageway closure
from 21:00
Tonight
Closure
M3 northbound Jct 12 to Jct 11 carriageway closure
from 21:00 Wed 14 Oct
Wed 14 Oct
Spotted something on the M3?
Warn other drivers in real time — thousands check these pages every day
💥 Crash⚠️ Hazard⛔ Closure🐌 Queue
📹 Latest M3 videos
🗺️ M3 Traffic Map — Where It's Happening
Tap a pin for full incident detail. Live positions from National Highways.
🔢 M3 Junction Status
Tap a junction for its pageJ3Lightwater & Bagshot61 crashes
J4Farnborough & Camberley43 crashes
J6Basingstoke & Old Basing26 crashes
J8Popham & Micheldever23 crashes
J9Winchester & Kings Worthy16 crashes
J10Winchester & Bar End100 crashes
J11Winchester & Twyford51 crashes
J12Eastleigh & Chandlers Ford33 crashes
🟢 Clear · 🟡 Delays nearby · 🔴 Severe/Crash · Status labels: 💥 CRASH · ❌ CLOSED · 🐌 SLOW · 🚧 WORKS · ⚠️ HAZARD
A red or orange junction border marks a STATS19 collision blackspot. Tap any junction for its own page — live incidents and full collision history. Tap the funnel to filter the list above.
📊 How busy is the M3?
The M3 carries up to 140,751 vehicles a day at its busiest stretch (J13–J14), including 9,901 HGVs — the 11th busiest motorway in Britain. Official Department for Transport counts, 2025.
140,751
🚗 vehicles a day · J13–J14
9,901
🚛 lorries a day
2025
📅 DfT count year
share of traffic on the busiest stretch
Busiest stretch of each motorway — vehicles a day
M25
212,636
M6
187,521
M56
179,634
M1
162,446
M8
158,065
M4
156,491
M3
140,751
View as table
| Road | Busiest stretch | Vehicles/day | HGVs/day | HGV share |
|---|---|---|---|---|
| M25 | near J14 | 212,636 | 14,853 | 7% |
| M6 | J20–J21 | 187,521 | 23,492 | 12.5% |
| M56 | J3–J4 | 179,634 | 7,547 | 4.2% |
| M1 | near J9 | 162,446 | 19,151 | 11.8% |
| M8 | J16–J17 | 158,065 | 7,214 | 4.6% |
| M4 | near J4 | 156,491 | 6,249 | 4% |
| M3 ◀ | J13–J14 | 140,751 | 9,901 | 7% |
Source: Department for Transport road traffic statistics, average annual daily flows 2025. Official counts, updated yearly.
📈 M3 Journey Pulse — when incidents actually happen
Measured from 127 incidents recorded on the M3 since February 2026: the riskiest window is 12:00–15:00, when 25% of incidents start. Right now (01:00) you're outside the peak window.
00
04
08
12
16
20
📈 Busiest 12:00–15:00
😌 Quietest 22:00–01:00
🕒 Typically clears in ~44 min ⏱ Typical delay ~10 min
View as table
| Hour | Incidents | Share |
|---|---|---|
| 00:00–01:00 | 1 | 0.8% |
| 01:00–02:00 | 2 | 1.6% |
| 02:00–03:00 | 2 | 1.6% |
| 03:00–04:00 | 2 | 1.6% |
| 04:00–05:00 | 4 | 3.1% |
| 05:00–06:00 | 3 | 2.4% |
| 06:00–07:00 | 5 | 3.9% |
| 07:00–08:00 | 6 | 4.7% |
| 08:00–09:00 | 4 | 3.1% |
| 09:00–10:00 | 7 | 5.5% |
| 10:00–11:00 | 10 | 7.9% |
| 11:00–12:00 | 9 | 7.1% |
| 12:00–13:00 ◀ peak | 7 | 5.5% |
| 13:00–14:00 ◀ peak | 15 | 11.8% |
| 14:00–15:00 ◀ peak | 10 | 7.9% |
| 15:00–16:00 | 4 | 3.1% |
| 16:00–17:00 | 8 | 6.3% |
| 17:00–18:00 | 9 | 7.1% |
| 18:00–19:00 | 7 | 5.5% |
| 19:00–20:00 | 4 | 3.1% |
| 20:00–21:00 | 2 | 1.6% |
| 21:00–22:00 | 4 | 3.1% |
| 22:00–23:00 | 1 | 0.8% |
| 23:00–00:00 | 1 | 0.8% |
Measured from 127 incidents recorded by this site since February 2026 (planned roadworks excluded). Recomputed nightly from our incident archive.
🧭 Along the M3
🔀 Major interchanges — where the M3 meets other roads
🔀J2
M25 Interchange
The M3's connection to the London orbital
⛰️J9
Twyford Down
Deep chalk cutting near Winchester, completed 1995
🔀J14
M27 Interchange
Southern end at Southampton, joining the M27
🏉
Twickenham Stadium
Via the A316 at the eastern end, off Whitton Road
⚠️ Most Dangerous M3 Junctions
Based on DfT STATS19 police collision records. The M3 has 668 recorded collisions at 20 collision hotspots, involving 1,040 casualties (10 fatal). Take extra care here.
#1
Severe Blackspot
J10
100 collisions · 148 casualties · 2 fatal · 17 serious
#2
Severe Blackspot
J3
61 collisions · 99 casualties · 1 fatal · 16 serious
#3
Severe Blackspot
J11
51 collisions · 80 casualties · 1 fatal · 9 serious
#4
Severe Blackspot
nr Camberley
35 collisions · 66 casualties · 1 fatal · 9 serious
#5
Severe Blackspot
nr Fleet
23 collisions · 37 casualties · 1 fatal · 8 serious
#6
Severe Blackspot
J9
16 collisions · 22 casualties · 1 fatal · 6 serious
🛒 Journey Essentials
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❓ M3 Traffic — Frequently Asked Questions
Q: Is the M3 closed today?
Yes — the M3 is closed right now: M3 northbound Jct 10 to Jct 8 carriageway closure, until 06:00.
Q: Is there traffic on the M3 today?
The M3 is closed right now: M3 northbound Jct 10 to Jct 8 carriageway closure, until 06:00. Check the live feed above for every closure on the route.
Q: What is the worst time to use the M3?
The M3 is typically busiest during morning rush hour (07:00–09:30) and evening rush hour (16:30–19:00) on weekdays.
Q: Are there roadworks on the M3 right now?
There are currently 5 active roadwork schemes on the M3. Check the live feed above for exact locations and durations.
Q: What roads connect to the M3?
The M3 connects to: M25, A322, M27, A34.
Q: How many vehicles use the M3 every day?
Official Department for Transport counts (2025) record 140,751 vehicles a day on the M3's busiest stretch (J13–J14), 9,901 of them HGVs. The full breakdown and comparison chart are in the traffic statistics section above.
Q: How busy is the M3 compared with other motorways?
The M3 has the 11th busiest motorway stretch in Britain at 140,751 vehicles a day (DfT 2025), behind the M25's 212,636 a day at the top.
Q: What time of day is the M3 worst for incidents?
Measured from 127 incidents recorded on the M3 since February 2026, the riskiest window is 12:00–15:00, when 25% of incidents start. The quietest is 22:00–01:00. Incidents on the M3 typically clear in about 44 minutes.
📊 M3 Status Summary
0
Active incidents
0
Severe/serious
5
Roadworks
01:53
Last updated
🆘 Broken down on the M3?
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ℹ️ M3 Road Details
- Length
- 52 miles
- Junctions
- 14
- From
- London (Sunbury)
- To
- Southampton (M27)
- Type
- Motorway
- AM Rush
- 07:00–09:30
- PM Rush
- 16:30–19:00
📍 Key M3 Locations
Sunbury
Basingstoke
Winchester
Southampton
🔗 Roads Connecting to the M3
🛣️ M3 Services & Motorway Stops
🔗 Related Tools
📱 Follow M3 Updates
Daily M3 incidents, posted across all four channels.
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