Live incidentLane closureNational Highways
M4 westbound lane closure at J8, live incident, started Sun 4 Oct, 21:27
- Road
- M4
- Direction
- Westbound
- Junctions
- J8
- Started
- Sun 4 Oct, 21:27
- Category
- Incident
M4 eastbound exit slip road closure at J17, 25 Sep 2026
Cleared
This roadworks closure on the M4 has cleared. It started at 09:30 on Fri 25 Sep and cleared at 15:30 on Fri 25 Sep.
Last updated by National Highways at 13:20 on Sunday 27 September 2026.
Closure details and map
- Status
- Cleared
- Closure type
- Exit slip road closure
- Category
- Authority Operation
- Road
- M4
- Direction
- Eastbound
- Junctions
- J17
- Location
- M4 J17 eastbound exit
- Started
- 09:30 on Friday 25 September 2026
- Cleared
- 15:30 on Friday 25 September 2026
- Details
- M4 eastbound Jct 17 exit slip lane 2 closure
- Source
- National Highways
- Last updated by the source
- 13:20 on Sunday 27 September 2026
Map of the M4 eastbound exit slip road closure at J17
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 58 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 incidentLane closureNational Highways
M4 westbound lane closure between J8 and J10, live incident, started Sun 4 Oct, 21:27
- Road
- M4
- Direction
- Westbound
- Junctions
- J8 to J10
- Started
- Sun 4 Oct, 21:27
- Category
- Incident
- Active roadworksCarriageway closureNational Highways
M4 eastbound carriageway closure between J23 and J22, active roadworks, started Sun 4 Oct, 20:51
- Road
- M4
- Direction
- Eastbound
- Junctions
- J23 to J22
- Started
- Sun 4 Oct, 20:51
- Expected to clear
- Mon 5 Oct, 06:00
- Category
- Road Maintenance
- Active roadworksLane closureNational Highways
M4 eastbound lane closure between J19 and J18, active roadworks, started Sun 4 Oct, 20:43
- Road
- M4
- Direction
- Eastbound
- Junctions
- J19 to J18
- Started
- Sun 4 Oct, 20:43
- Expected to clear
- Mon 5 Oct, 06:00
- Category
- Road Maintenance
- 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
- 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