Live incidentLane closureNational Highways
M4 eastbound lane closure between J20 and J19, live incident, started Sat 10 Oct, 14:38
- Road
- M4
- Direction
- Eastbound
- Junctions
- J20 to J19
- Started
- Sat 10 Oct, 14:38
- Category
- Incident
M4 eastbound lane closure between J4 and J3, 10 Oct 2026
Live incident
This incident on the M4 is in force now. It started at 15:40 on Sat 10 Oct.
Last updated by National Highways at 16:05 on Saturday 10 October 2026.
Closure details and map
- Status
- Live incident
- Closure type
- Lane closure
- Category
- Incident
- Road
- M4
- Direction
- Eastbound
- Junctions
- J4 to J3
- Location
- M4 eastbound between J4 and J3
- Started
- 15:40 on Saturday 10 October 2026
- Source
- National Highways
- Last updated by the source
- 16:05 on Saturday 10 October 2026
Map of the M4 eastbound lane closure between J4 and J3
Use the arrow keys to move the map and the plus and minus keys to zoom.
- Live incident
Other M4 closures and crash records
3 other closures are in force on the M4 right now, and 66 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 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
- Tue 13 Oct, 06:00
- Category
- Clearance Work
- Active roadworksHard shoulder closureNational Highways
M4 eastbound hard shoulder closure between J17 and J16, active roadworks, started Tue 27 Apr 2021, 23:59
- Road
- M4
- Direction
- Eastbound
- Junctions
- J17 to J16
- Started
- Tue 27 Apr 2021, 23:59
- Expected to clear
- Fri 30 Jul 2027, 18:00
- Category
- Road Maintenance
- PlannedHard shoulder closureNational Highways
M4 eastbound hard shoulder closure between J19 and J18, planned, starts Sat 10 Oct, 20:00
- Road
- M4
- Direction
- Eastbound
- Junctions
- J19 to J18
- Starts
- Sat 10 Oct, 20:00
- Expected to clear
- Sun 11 Oct, 06:00
- Category
- Road Maintenance
- PlannedRoad closureTraffic Wales
M4 eastbound road closure from J28 Tredegar Park to J24 Coldra, planned, starts Sun 11 Oct, 20:00
- Road
- M4
- Direction
- Eastbound
- Junctions
- J28 to J24
- Area
- J28 Tredegar Park to J24 Coldra
- Starts
- Sun 11 Oct, 20:00
- Expected to clear
- Sat 17 Oct, 06:00
- Category
- Clearance Work
- PlannedRoad closureTraffic Wales
M4 eastbound road closure from J28 Tredegar Park to J24 Coldra, planned, starts Sun 11 Oct, 20:00
- Road
- M4
- Direction
- Eastbound
- Junctions
- J28 to J24
- Area
- J28 Tredegar Park to J24 Coldra
- Starts
- Sun 11 Oct, 20:00
- Expected to clear
- Sat 17 Oct, 06:00
- Category
- Roadworks