Live incidentLane closureNational Highways
M4 eastbound lane closure at J18, live incident, started Mon 5 Oct, 15:36
- Road
- M4
- Direction
- Eastbound
- Junctions
- J18
- Started
- Mon 5 Oct, 15:36
- Category
- Incident
M4 westbound exit slip road closure at J17, 5 Oct 2026
Cleared
This roadworks closure on the M4 has cleared. It started at 09:30 on Mon 5 Oct and cleared at 15:30 on Mon 5 Oct.
Last updated by National Highways at 15:00 on Monday 5 October 2026.
Closure details and map
- Status
- Cleared
- Closure type
- Exit slip road closure
- Category
- Authority Operation
- Road
- M4
- Direction
- Westbound
- Junctions
- J17
- Location
- M4 J17 westbound exit
- Started
- 09:30 on Monday 5 October 2026
- Cleared
- 15:30 on Monday 5 October 2026
- Details
- M4 westbound Jct 17 exit slip lane 1 narrowing
- Source
- National Highways
- Last updated by the source
- 15:00 on Monday 5 October 2026
Map of the M4 westbound 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
6 other closures are in force on the M4 right now, and 49 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 eastbound lane closure between J19 and J18, live incident, started Mon 5 Oct, 15:36
- Road
- M4
- Direction
- Eastbound
- Junctions
- J19 to J18
- Started
- Mon 5 Oct, 15:36
- Category
- Incident
- Live incidentLane closureNational Highways
M4 westbound lane closure between J8 and J10, live incident, started Mon 5 Oct, 15:23
- Road
- M4
- Direction
- Westbound
- Junctions
- J8 to J10
- Started
- Mon 5 Oct, 15:23
- Category
- Incident
- 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
- 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