Live incidentLane closureNational Highways
M4 westbound lane closure between J20 and J21, live incident, started Mon 28 Sep, 03:23
- Road
- M4
- Direction
- Westbound
- Junctions
- J20 to J21
- Started
- Mon 28 Sep, 03:23
- Category
- Incident
M4 westbound slip road closure at J22, 28 Sep 2026
Cleared
This incident on the M4 has cleared. It started at 03:41 on Mon 28 Sep and cleared at 04:15 on Mon 28 Sep.
Last updated by National Highways at 03:46 on Monday 28 September 2026.
Closure details and map
- Status
- Cleared
- Closure type
- Slip road closure
- Category
- Incident
- Road
- M4
- Direction
- Westbound
- Junctions
- J22
- Location
- M4 J22 westbound access
- Started
- 03:41 on Monday 28 September 2026
- Cleared
- 04:15 on Monday 28 September 2026
- Source
- National Highways
- Last updated by the source
- 03:46 on Monday 28 September 2026
Map of the M4 westbound slip road closure at J22
Use the arrow keys to move the map and the plus and minus keys to zoom.
- Cleared
Other M4 closures and crash records
7 other closures are in force on the M4 right now, and 53 more are planned in the next 7 days.
The M4 accident statistics from 1979 to 2025 record 29,200 collisions on the road, 724 of them fatal.
- Live incidentCarriageway closureNational Highways
M4 westbound carriageway closure between J20 and J21, live incident, started Sun 27 Sep, 21:03
- Road
- M4
- Direction
- Westbound
- Junctions
- J20 to J21
- Started
- Sun 27 Sep, 21:03
- Category
- Incident
- Active roadworksExit slip road closureTraffic Wales
M4 westbound exit slip road closure at J24 Coldra, active roadworks, started Sun 27 Sep, 20:00
- Road
- M4
- Direction
- Westbound
- Junctions
- J24
- Area
- J24 Coldra
- Started
- Sun 27 Sep, 20:00
- Expected to clear
- Thu 1 Oct, 06:00
- Category
- Clearance Work
- Active roadworksRoad closureTraffic Wales
M4 westbound road closure between J22 and J23, active roadworks, started Sat 26 Sep, 21:00
- Road
- M4
- Direction
- Westbound
- Junctions
- J22 to J23
- Area
- J22 Pilning/Prince of Wales Bridge to J23 Rogiet
- Started
- Sat 26 Sep, 21:00
- Expected to clear
- Fri 2 Oct, 06:00
- Category
- Roadworks
- Active roadworksExit slip road closureTraffic Wales
M4 eastbound exit slip road closure at J32 Coryton, active roadworks, started Fri 25 Sep, 20:00
- Road
- M4
- Direction
- Eastbound
- Junctions
- J32
- Area
- J32 Coryton
- Started
- Fri 25 Sep, 20:00
- Expected to clear
- Tue 29 Sep, 06:00
- Category
- Roadworks
- Active roadworksExit slip road closureTraffic Wales
M4 eastbound exit slip road closure at J35 Pencoed, active roadworks, started Tue 15 Sep, 19:00
- Road
- M4
- Direction
- Eastbound
- Junctions
- J35
- Area
- J35 Pencoed
- Started
- Tue 15 Sep, 19:00
- Expected to clear
- Fri 9 Oct, 06:00
- Category
- Clearance Work