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M4 mobile lane closure in both directions between J18 and J17, 28 Sep 2026

Cleared

This roadworks closure on the M4 has cleared. It started at 20:00 on Mon 28 Sep and cleared at 06:00 on Tue 29 Sep.

Last updated by National Highways at 04:55 on Wednesday 30 September 2026.

Closure details and map

Status
Cleared
Closure type
Mobile lane closure
Category
Road Maintenance
Road
M4
Direction
Both directions
Junctions
J18 to J17
Location
M4 eastbound between J18 and J17
Lanes
1 of 4 lanes closed
Started
20:00 on Monday 28 September 2026
Cleared
06:00 on Tuesday 29 September 2026
Details
M4 both directions Jct 15 to 22 - mobile lane closure
Source
National Highways
Last updated by the source
04:55 on Wednesday 30 September 2026

Map of the M4 mobile lane closure in both directions between J18 and J17

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  • 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.

All M4 closures