Live incidentLane closureNational Highways
M4 eastbound lane closure between J20 and J19, live incident, started Tue 6 Oct, 19:41
- Road
- M4
- Direction
- Eastbound
- Junctions
- J20 to J19
- Started
- Tue 6 Oct, 19:41
- Category
- Incident
M4 eastbound lane closure at J12, 1 Jun 2026
Cleared
This incident on the M4 has cleared. It started at 21:30 on Mon 1 Jun and cleared at 21:48 on Mon 1 Jun.
Last updated by National Highways at 21:48 on Monday 1 June 2026.
Closure details and map
- Status
- Cleared
- Closure type
- Lane closure
- Category
- Incident
- Road
- M4
- Direction
- Eastbound
- Junctions
- J12
- Location
- M4 eastbound within J12
- Started
- 21:30 on Monday 1 June 2026
- Cleared
- 21:48 on Monday 1 June 2026
- Source
- National Highways
- Last updated by the source
- 21:48 on Monday 1 June 2026
Map of the M4 eastbound lane closure at J12
Use the arrow keys to move the map and the plus and minus keys to zoom.
- Cleared
Other M4 closures and crash records
16 other closures are in force on the M4 right now, and 39 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 Tue 6 Oct, 20:00
- Road
- M4
- Direction
- Both directions
- Junctions
- J18 to J17
- Started
- Tue 6 Oct, 20:00
- Expected to clear
- Wed 7 Oct, 06:00
- Category
- Road Maintenance
- Active roadworksLane closureNational Highways
M4 eastbound lane closure between J11 and J10, active roadworks, started Tue 6 Oct, 20:00
- Road
- M4
- Direction
- Eastbound
- Junctions
- J11 to J10
- Started
- Tue 6 Oct, 20:00
- Expected to clear
- Wed 7 Oct, 06:00
- Category
- Road Maintenance
- Active roadworksLane closureNational Highways
M4 eastbound lane closure between J15 and J14, active roadworks, started Tue 6 Oct, 20:00
- Road
- M4
- Direction
- Eastbound
- Junctions
- J15 to J14
- Started
- Tue 6 Oct, 20:00
- Expected to clear
- Wed 7 Oct, 06:00
- Category
- Road Maintenance
- Active roadworksLane closureNational Highways
M4 eastbound lane closure between J19 and J18, active roadworks, started Tue 6 Oct, 20:00
- Road
- M4
- Direction
- Eastbound
- Junctions
- J19 to J18
- Started
- Tue 6 Oct, 20:00
- Expected to clear
- Wed 7 Oct, 06:00
- Category
- Road Maintenance
- Active roadworksLane closureNational Highways
M4 eastbound lane closure between J20 and J19, active roadworks, started Tue 6 Oct, 20:00
- Road
- M4
- Direction
- Eastbound
- Junctions
- J20 to J19
- Started
- Tue 6 Oct, 20:00
- Expected to clear
- Wed 7 Oct, 06:00
- Category
- Road Maintenance