Skip to main content
CrashStats

M4 westbound bridge closure from J37 Pyle to J38 Margam, 2 Oct 2026

Planned

This roadworks closure on the M4 is planned to start at 20:00 on Fri 2 Oct and expected to clear at 06:00 on Sun 4 Oct.

Last updated by Traffic Wales at 11:48 on Saturday 26 September 2026.

Closure details and map

Status
Planned
Closure type
Bridge closure
Category
Resurfacing Work
Road
M4
Direction
Westbound
Junctions
J37 to J38
Location
J37 Pyle to J38 Margam
Working hours
20:00 to 06:00 overnight
Planned start
20:00 on Friday 2 October 2026
Expected to clear
06:00 on Sunday 4 October 2026
Details
Resurfacing work, bridge closed, diversion
Source
Traffic Wales
Last updated by the source
11:48 on Saturday 26 September 2026

Map of the M4 westbound bridge closure from J37 Pyle to J38 Margam

Use the arrow keys to move the map and the plus and minus keys to zoom.

  • Planned

Other M4 closures and crash records

7 other closures are in force on the M4 right now, and 52 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