Overnight road closures

The M4 eastbound carriageway is closed from 20:00 until 06:00 fri 16 oct — about 10 hours.
You will need another route — the main carriageway is shut.

Also closed on

Tomorrow Wed 14 Oct Thu 15 Oct Fri 16 Oct

Exactly where

M4 eastbound Jct 18 between exit and entry slip road carriageway closure

Why the road is closed

M4 eastbound Jct 18 between exit and entry slip roads - carriageway closure for resurfacing

Diversion route

Diversion via exit and entry slip roads

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The M4 eastbound carriageway is closed from 21:00 until 06:00 fri 16 oct — about 9 hours.
You will need another route — the main carriageway is shut.

Also closed on

Fri 16 Oct Sat 17 Oct

Exactly where

M4 eastbound Jct 13 between the slips carriageway closure

Why the road is closed

M4 eastbound Jct 13 - carriageway closure for resurfacing work.

Diversion route

National Highways have not published a diversion for this closure. Follow the signs on the road — and if you are driving an HGV, check the route suits your height and weight before committing to it.

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The M4 northbound exit slip road is closed now, from 22:00 on Sunday until 06:00 on Saturday — about 1305 hours.
The road stays open. You cannot come off here — carry on to the next junction.

Also closed on

Tonight Tomorrow Wed 14 Oct Thu 15 Oct Fri 16 Oct Sat 17 Oct Sun 18 Oct

Exactly where

M4 westbound Jct 20 exit slip road to M5 northbound Jct 15 - carriageway closed

Why the road is closed

M4 westbound Jct 20 exit slip road to M5 northbound Jct 15 - carriageway closure for structure maintenance.

Diversion route

Diversion via M5 southbound, exit Jct 16 to turn and return M5 northbound.

Part of a scheme running until 5 Dec 2026

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The M4 eastbound exit slip road is closed from 23:00 until 06:00 fri 16 oct — about 7 hours.
The road stays open. You cannot come off here — carry on to the next junction.

Also closed on

Tonight Tomorrow Wed 14 Oct Thu 15 Oct Fri 16 Oct

Exactly where

M4 Eastbound Jct 2 exit slip road closure

Why the road is closed

M4 Eastbound Jct 3 to Jct 2 Slip road and lane closure for concrete work

Diversion route

Diversion via Local Authority and National highway network

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The M4 eastbound carriageway is closed from 23:00 until 06:00 fri 16 oct — about 7 hours.
You will need another route — the main carriageway is shut.

Also closed on

Thu 15 Oct Fri 16 Oct

Exactly where

M4 Eastbound and Westbound Jct 4B to M25 Clockwise Jct 15 link road closure

Why the road is closed

M4 Eastbound and Westbound Jct 4B to M25 Clockwise Jct 15 Lane and link road closure for urgent safety fence repairs

Diversion route

Diversion via National Highways Network

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🔔 Get told before this happens again Early Warning alerts you the moment the M4 closes or backs up — straight to your phone. Set up →