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M4 J39 traffic

Right now at M4 J39: 1 collision.

Updated 16:55 UK time · at J39 and the stretches either side

View on the live map All M4 traffic

Right now

  1. M4 westbound · J39

    Collision

    since 13:51 (3 h 5 min)

    Traffic Wales ×2 · TomTom

    Timeline · 9 updates
    1. Traffic Wales: obstruction or hazard
    2. TomTom: collision, “Stationary traffic, Incident”, delay ~20 min
    3. TomTom: delay now ~20 min (was ~15)
    4. TomTom: delay now ~10 min (was ~17), “Queuing traffic, Incident”
    5. TomTom: “Stationary traffic, Incident”
    6. Traffic Wales: queueing traffic
    7. TomTom no longer reports it
    8. Traffic Wales: now says incident, “Now open : Westbound : J41 Pentyla/Baglan to J42 Earlswood”
    9. Traffic Wales: incident (reported again)

Closures tonight

No closures planned at J39 tonight.

The last 90 days

Incidents
1
Collisions
1
Road closed
0times

Junctions either side

Every M4 junction

Common questions

Is the M4 closed at junction 39 right now?

No incidents have closed it right now.

Is M4 J39 closed tonight?

No closures are planned at J39 tonight.

How many crashes have there been at M4 J39?

1 collision reported at or either side of J39 in the last 90 days, the latest on 5 Nov 2026 at 13:51.

Includes incidents at J39 and on the stretches either side of it. Sources: National Highways, TomTom, TfL and Traffic Wales. Times are UK time.