Live incidentLane closureNational Highways
M4 westbound lane closure at J20, live incident, started Mon 5 Oct, 18:41
- Road
- M4
- Direction
- Westbound
- Junctions
- J20
- Started
- Mon 5 Oct, 18:41
- Category
- Incident
M4 eastbound congestion from J26 Malpas to J23A Magor, 5 Oct 2026
Cleared
This incident on the M4 has cleared. It started at 07:07 on Mon 5 Oct and cleared at 09:50 on Mon 5 Oct.
Last updated by Traffic Wales at 07:07 on Monday 5 October 2026.
Closure details and map
- Status
- Cleared
- Closure type
- Congestion
- Road
- M4
- Direction
- Eastbound
- Junctions
- J26 to J23A
- Location
- J26 Malpas to J23A Magor
- Started
- 07:07 on Monday 5 October 2026
- Cleared
- 09:50 on Monday 5 October 2026
- Details
- Congestion, delays possible
- Source
- Traffic Wales
- Last updated by the source
- 07:07 on Monday 5 October 2026
Map of the M4 eastbound congestion from J26 Malpas to J23A Magor
Use the arrow keys to move the map and the plus and minus keys to zoom.
- Cleared
Other M4 closures and crash records
14 other closures are in force on the M4 right now, and 44 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.
- Active roadworksMobile lane closureNational Highways
M4 mobile lane closure in both directions between J18 and J17, active roadworks, started Mon 5 Oct, 20:00
- Road
- M4
- Direction
- Both directions
- Junctions
- J18 to J17
- Started
- Mon 5 Oct, 20:00
- Expected to clear
- Tue 6 Oct, 06:00
- Category
- Road Maintenance
- Active roadworksRoad closureTraffic Wales
M4 road closure in both directions between J25A and J27, active roadworks, started Mon 5 Oct, 20:00
- Road
- M4
- Direction
- Both directions
- Junctions
- J25A to J27
- Area
- J25A Grove Park to J27 High Cross
- Started
- Mon 5 Oct, 20:00
- Expected to clear
- Sat 10 Oct, 06:00
- Category
- Carriageway Maintenance
- Active roadworksLane closureNational Highways
M4 eastbound lane closure between J13 and J12, active roadworks, started Mon 5 Oct, 20:00
- Road
- M4
- Direction
- Eastbound
- Junctions
- J13 to J12
- Started
- Mon 5 Oct, 20:00
- Expected to clear
- Tue 6 Oct, 06:00
- Category
- Road Maintenance
- Active roadworksLane closureNational Highways
M4 eastbound lane closure between J19 and J18, active roadworks, started Mon 5 Oct, 20:00
- Road
- M4
- Direction
- Eastbound
- Junctions
- J19 to J18
- Started
- Mon 5 Oct, 20:00
- Expected to clear
- Tue 6 Oct, 06:00
- Category
- Road Maintenance
- Active roadworksEntry slip road closureTraffic Wales
M4 eastbound entry slip road closure between J24 and J22, active roadworks, started Mon 5 Oct, 20:00
- Road
- M4
- Direction
- Eastbound
- Junctions
- J24 to J22
- Area
- J24 Coldra to J22 Pilning/Prince of Wales Bridge
- Started
- Mon 5 Oct, 20:00
- Expected to clear
- Fri 9 Oct, 06:00
- Category
- Surveys