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M3
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M3 Westbound Traffic

M3 Motorway · Westbound (southbound / Southampton-bound) carriageway — live updates every 5 minutes, 24/7
M3 WESTBOUND TRAFFIC NOW
M3 SOUTHBOUND J8–J9CLOSED 21:00–06:00PLANNED CLOSURE TONIGHT
Planned tonight, 1 of 1
Clear ⏱ Updated 14:07

M3 westbound traffic at 14:07 on Tuesday 3 November: 1 closure running now · 1 closure tonight.

→ M3 eastbound traffic(northbound / London-bound) ⤴ All M3 traffic — both directions
🚨 0 incidents 🚧 1 roadworks · 3 soon
🔍
52 miles long
Junctions J1–J14
Regions: London, South East, South West
Home › Traffic › Roads › M3 › Westbound

🚨 M3 Westbound traffic now: live incidents & roadworks

Updates every 5 min
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No live incidents on the M3 right now — checking National Highways every 5 minutes, 24/7. Closures are listed below.

🌙 M3 westbound closures tonight and the next 3 days 4

From National Highways' closure report, in their words. Times can change - check before you set off.

  • Partial closure
    Northbound M3 northbound Jct 9 entry slip road closure
    Now · until 06:00 Mon 1 Nov
  • Full closure
    Southbound M3 southbound Jct 8 to Jct 9 carriageway closure
    Tonight · 21:00–06:00
  • Full closure
    Westbound M3 Westbound Jct 2 carriageway closure between exit and entry slip roads
    Tomorrow night · 22:00–05:30
    Diversion: Diversion via Local Authority and National Highway network
  • Full closure
    Northbound M3 northbound Jct 10 to Jct 8 carriageway closure
    Thu 5 Nov · 21:00–06:00
All M3 roadworks & diversions →

Is the M3 westbound closed? Quick answers

Checked 14:07 on Tuesday 3 November 2026.

Is the M3 westbound closed right now?

No. There is no full closure on the M3 westbound at 14:07.

Is there an incident on the M3 westbound right now?

No. No incidents are reported on the M3 westbound at 14:07.

Is the M3 westbound closed tonight?

Yes. The M3 westbound has 1 full closure planned tonight (Tue 3 Nov, 18:00 to 06:00): southbound Jct 8 to Jct 9 carriageway closure, 21:00 to 06:00. Plus 1 lane or slip road closure.

Tonight: M3 closures and diversions ›

Is the M3 westbound closed this weekend?

Yes. The M3 westbound has 2 full closures planned this weekend (Fri 6 Nov 18:00 to Mon 9 Nov 06:00): northbound Jct 9 to Jct 8 carriageway closure, from Fri 6 Nov 21:00, until Mon 9 Nov 06:00; and southbound Jct 8 to Jct 9 carriageway closure, from Fri 6 Nov 21:00, until Mon 9 Nov 06:00. Plus 3 lane or slip road closures.

This weekend: M3 closures and diversions ›

Is there an accident on the M3 westbound today?

No. No collision has been reported on the M3 westbound since midnight.

M3 accidents today and yesterday ›

Answers use official data only: the National Highways live incident feed and their planned closure report. Times can change, so check before you set off.

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ℹ️ About M3 westbound traffic

This page tracks live M3 traffic westbound only — every incident, closure and roadworks National Highways publish for the westbound carriageway, updated every 5 minutes, 24 hours a day. Anything they list without naming a direction is shown here too, so nothing is missed.

Heading the other way? See M3 eastbound traffic. The full M3 traffic page covers both directions, with the live map, junction-by-junction status, the latest M3 videos and tonight's M3 roadworks.

❓ M3 Westbound Traffic — Frequently Asked Questions

Is the M3 westbound closed today?

No — as of 14:07 National Highways list no full closure on the M3 westbound. Live updates every 5 minutes.

Are there any accidents on the M3 westbound today?

None reported at 14:07 — the live board above updates every 5 minutes, 24 hours a day.

Is there an incident on the M3 westbound right now?

No incidents reported at 14:07 — no police incidents, obstructions, breakdowns or collisions on the M3 westbound. The live board above updates every 5 minutes, 24 hours a day.

Why is the M3 slow westbound today?

Nothing is listed right now — when the board above is clear, slow westbound traffic is usually rush-hour volume (07:00–09:00 and 16:30–18:30 on weekdays).

Are there roadworks on the M3 westbound tonight?

Yes — 3 overnight closures are scheduled on the M3 westbound. Times and junctions are in the closures list above and on the M3 roadworks page.

Where can I check live M3 traffic westbound?

Right here — this page is live M3 traffic for the westbound carriageway, updated every 5 minutes from National Highways, 24 hours a day. The full M3 page covers both directions with the live map and junction-by-junction status.

Which part of the M3 does this page cover?

The whole westbound carriageway, end to end — the M3 runs between London (Sunbury) and Southampton (M27). The eastbound side has its own page.

🧭 More M3 coverage

M3 traffic — both directions M3 eastbound traffic M3 roadworks tonight

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