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M4 mobile lane closure in both directions between J18 and J17, 5 Oct 2026

Active roadworks

This roadworks closure on the M4 is in force now. It started at 20:00 on Mon 5 Oct and is expected to clear at 06:00 on Tue 6 Oct.

Last updated by National Highways at 22:52 on Monday 5 October 2026.

Closure details and map

Status
Active roadworks
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 5 October 2026
Expected to clear
06:00 on Tuesday 6 October 2026
Details
M4 both directions Jct 15 to 22 - mobile lane closure
Source
National Highways
Last updated by the source
22:52 on Monday 5 October 2026

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

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  • Active roadworks

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