M4 closed J19–J20 westbound (obstruction)

Road closure on the M4 westbound at J19–J20 on Tuesday 27 October 2026, from 08:46. Cleared at 21:34 after 12 h 48 min. Timeline of reports from the motorway signs, TomTom and National Highways.

Status

Cleared 21:34 on 27 Oct 2026, after 12 h 48 min

Location

M4 westbound · J19–J20

Reported as

Obstruction or hazard

Lanes

Road closed

At its worst

Delay ~6 min

Sources

Motorway signs · TomTom · National Highways

Timeline

1. Tue 08:46 Motorway signs: “DEBRIS IN ROAD - SLOW”
2. Tue 16:08 TomTom: queueing traffic, “Slow traffic”, delay ~4 min
3. Tue 16:23 TomTom no longer reports it
4. Tue 16:27 TomTom: queueing traffic, “Queuing traffic”, delay ~6 min (reported again)
5. Tue 16:49 TomTom: “Slow traffic”
6. Tue 16:54 TomTom: “Queuing traffic”
7. Tue 17:03 TomTom: “Slow traffic”
8. Tue 17:18 TomTom no longer reports it
9. Tue 17:21 TomTom: queueing traffic, “Slow traffic”, delay ~3 min (reported again)
10. Tue 17:22 TomTom no longer reports it
11. Tue 17:30 TomTom: queueing traffic, “Queuing traffic”, delay ~5 min (reported again)
12. Tue 17:40 TomTom: “Slow traffic”
13. Tue 17:50 TomTom no longer reports it
14. Tue 20:10 National Highways: road closed
15. Tue 20:20 Motorway signs: National Highways' sign feed hasn't changed since 08:47, so this is no longer shown
16. Tue 20:20 All clear: no source reports it any more
17. Tue 21:34 National Highways: road reopened
18. Tue 21:34 All clear: no source reports it any more

Source reports

• Overhead signs read “DEBRIS IN ROAD - SLOW” (5 signs; furthest along: M4 westbound between J19 and J20).
• Slow traffic
• M4 westbound between J19 and J20

Other recent incidents on the M4

• M4 crash J10–J8 eastboundyesterday 16:33 · cleared after 1 h 18 min
• M4 crash Eastboundyesterday 09:44 · cleared after 25 min
• M4 crash Westboundyesterday 08:29 · cleared after 40 min
• M4 crash Prince of Wales Bridge eastboundyesterday 08:13 · cleared after 22 min
• M4 stopped traffic J3–J2yesterday 06:48 · cleared after 2 h 13 min
• M4 crash J10–J11 westboundSun 05:12 · cleared after 1 h
• M4 crash J12–J11 eastboundSun 04:41 · cleared after 1 h 31 min
• M4 reported crash J17–J16 eastboundSat 17:47 · cleared after 37 min
• M4 reported crash J17 westboundSat 17:47 · cleared after 37 min
• M4 stopped traffic J3–J2Sat 09:48 · cleared after 25 min

Live traffic and past incidents at M4 J19 and M4 J20.

The sources don't report causes or injuries, so neither does this page. Times are UK time. For alerts, follow @motorways.me on Bluesky.