M4 road closures today & tonight
Updated . The live feeds are checked every five minutes.
No live closures are reported on the M4 right now.
1 closure is scheduled tonight (18:00 to 06:00).
Is the M4 closed? Live updates from National Highways and Traffic Wales: accidents and emergency closures happening today, overnight closures tonight, roadworks in force and planned closures for the week ahead, filterable by direction.
M4 closures tonight
Closures starting between 18:00 on Saturday 31 October and 06:00 the next morning (UK time), including any already in force.
No closures in this direction tonight.
Recently cleared on the M4
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M4 eastbound Jct 18 to Jct 17 single lane running (166/8 to 161/0)
ClearedCleared 11 hours 17 minutes ago
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M4 eastbound hard shoulder + lane 1 and lane 2 closure (106/2 to 104/9)
ClearedCleared 11 hours 32 minutes ago
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M4 Eastbound Jct 5 to Jct 4b Lane closure
ClearedCleared 12 hours 27 minutes ago
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M4 Eastbound Jct 5 to Jct 4b Lane 4,3,2 closure
ClearedCleared 12 hours 27 minutes ago
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M4 eastbound lanes 3 and 2 closed (154/5B to 153/4B)
ClearedCleared 13 hours 22 minutes ago
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M4 eastbound lane 1 closure (59/3 to 57/3)
ClearedCleared 13 hours 57 minutes ago
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M4 eastbound Jct 10 exit slip road closure
ClearedCleared 14 hours 12 minutes ago
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M4 eastbound Jct 17 to 16 carriageway closed
ClearedCleared 14 hours 32 minutes ago
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M4 Jct 7 southbound Huntercoombe Spur lane 1 closure
ClearedCleared 14 hours 57 minutes ago
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M4 eastbound Jct 19 to Jct 18 single lane running 174/6-169/0
ClearedCleared 15 hours 37 minutes ago
M4 closure history: the last 12 months
Since 31 October 2025, 2,402 closures have been recorded on the M4: 2,402 planned roadworks and 0 unplanned incidents. 92% started overnight (18:00 to 06:00), and a typical closure lasted 8 hours 15 minutes. The busiest stretch was J17 to J18 (209 closures), and Tuesday was the busiest day of the week.
- Roadworks & planned closures
- 2,402
- Unplanned incidents
- 0
- Started overnight
- 92%
- Typical duration
- 8 hours 15 minutes
- Average 8 hours
Busiest M4 sections
- J17 to J18 209
- J16 to J17 180
- J22 to J23 180
- J18 to J19 156
- J12 to J13 123
When closures happen
- Busiest day
- Tuesday
- Busiest month
- July 2026 (291)
- Overnight closures
- 2,220
Busiest months: July 2026 (291), October 2026 (269), August 2026 (265).
Closures by direction
- Eastbound
- 2,162
- Westbound
- 200
- Clockwise
- 40
M4 crash history
1,152 injury collisions were recorded on the M4 between 2021 and 2025: 36 fatal, 171 serious and 945 slight, involving 1,746 casualties. The Department for Transport publishes STATS19 once a year, so 2025 is the latest year available and today's crashes appear above as live incidents instead.
- Collisions
- 1,152
- Fatal
- 36
- Serious
- 171
- Slight
- 945
M4 closures: your questions answered
Is the M4 closed today?
No. As of 17:12 UK time there are no live closures or roadworks in force on the M4. The next planned closure is roadworks (eastbound, J18 to J19), starting Sat 31 Oct, 20:00.
Is the M4 closed tonight?
Yes, 1 closure on the M4 is scheduled to start between 18:00 on Saturday 31 October and 06:00 the next morning, including roadworks (eastbound, J18 to J19) from 20:00.
Why is the M4 closed?
Current M4 closures are for roadworks. Over the last 12 months, 100% of the 2,402 closures recorded on the M4 were planned roadworks and none were unplanned incidents; 92% started overnight.
Where does this data come from?
Live M4 closures come from the National Highways road closure feed for England's motorways and major A roads and from Traffic Wales, checked every five minutes. Closure history is built from that feed's archive. Collision figures come from the Department for Transport's STATS19 road safety data, which is published once a year, so recent crashes appear here as live incidents long before they reach the official statistics.