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CrashStats

M4 road closure in both directions between J45 and J46, 4 Oct 2026

Cleared

This incident on the M4 has cleared. It started at 22:43 on Sun 4 Oct and cleared at 23:30 on Sun 4 Oct.

Last updated by Traffic Wales at 22:43 on Sunday 4 October 2026.

Closure details and map

Status
Cleared
Closure type
Road closure
Category
Incident
Road
M4
Direction
Both directions
Junctions
J45 to J46
Location
J45 Ynysforgan to J46 Llangyfelach
Started
22:43 on Sunday 4 October 2026
Cleared
23:30 on Sunday 4 October 2026
Details
Incident, road closed
Source
Traffic Wales
Last updated by the source
22:43 on Sunday 4 October 2026

Map of the M4 road closure in both directions between J45 and J46

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  • Cleared

Other M4 closures and crash records

22 other closures are in force on the M4 right now, and 41 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