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CrashStats

M4 westbound lane closure at J20, 5 Oct 2026

Cleared

This incident on the M4 has cleared. It started at 18:41 on Mon 5 Oct and cleared at 21:35 on Mon 5 Oct.

Last updated by National Highways at 19:04 on Monday 5 October 2026.

Closure details and map

Status
Cleared
Closure type
Lane closure
Category
Incident
Road
M4
Direction
Westbound
Junctions
J20
Location
M4 westbound within J20
Started
18:41 on Monday 5 October 2026
Cleared
21:35 on Monday 5 October 2026
Source
National Highways
Last updated by the source
19:04 on Monday 5 October 2026

Map of the M4 westbound lane closure at J20

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  • Cleared

Other M4 closures and crash records

22 other closures are in force on the M4 right now, and 42 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.

All M4 closures