M4 road closures & live traffic incidents

No live incident closures on the M4 right now, but 2 roadworks are currently in force.

Live M4 updates from National Highways and Traffic Wales: incident closures, roadworks in force, planned closures for the week ahead and recently cleared disruption.

Live incident

Active roadworks

Planned

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M4 roadworks in force now

M4 Eastbound Jct 3 to Jct 1 Carriageway closure

Active Roadworks National Highways

Hounslow M4 · M4 J2 Eastbound Access

Expected to clear in 6 hours 20 minutes

Started 3 Aug 2026, 21:00 Expected clear 4 Aug 2026, 04:30

M4 Eastbound Jct 3 to Jct 1 Carriageway closure

Category: Road Maintenance

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M4 eastbound lanes 1 and 2 closed

Active Roadworks National Highways

South Gloucestershire M4 · M4 Eastbound Between J19 And J18

Expected to clear in 6 hours 50 minutes

Started 3 Aug 2026, 18:43 Expected clear 4 Aug 2026, 05:00

M4 eastbound lanes 1 and 2 closed

Category: Construction Work

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Recently cleared on the M4

All live closures M4 closure history