Severe
Eastbound Starting soon
The M4 eastbound between junctions J13 and J12
🔨 Roadworks
🚦 1 of 3 lanes closed ✅ The event is expected to clear between 06:00 and 06:00 on 23 September 2026
Severe
Westbound Starting soon
The M4 westbound between junctions J12 and J13
🔨 Roadworks
🚦 1 of 3 lanes closed ✅ The event is expected to clear between 06:00 and 06:00 on 23 September 2026
Severe
Westbound Starting soon
The M4 westbound between junctions J17 and J18
🔨 Roadworks
🚦 1 of 3 lanes closed ✅ The event is expected to clear between 15:00 and 15:00 on 1 October 2026
Severe
Eastbound Starting soon
The M4 eastbound between junctions J18 and J17
🔨 Roadworks
🚦 1 of 3 lanes closed ✅ The event is expected to clear between 15:00 and 15:00 on 22 September 2026
Severe
Eastbound Starting soon
The M4 eastbound between junctions J20 and J19
🔨 Roadworks
🚦 1 of 2 lanes closed ✅ The event is expected to clear between 06:00 and 06:00 on 26 September 2026
Severe
Westbound Starting soon
The M4 westbound between junctions J19 and J21
🔨 Roadworks
🚦 1 of 3 lanes closed ✅ The event is expected to clear between 06:00 and 06:00 on 25 September 2026
Severe
Eastbound Starting soon 🌙 tonight
M4 eastbound Jct 8/9 to Jct 7 carriageway closure
Overall Scheme Details: M4 eastbound Jct 8/9 to Jct 7 including A404M and A308M southbound.
Carriageway and lane closures for structures work.
✅ until 07:00 Wed 23 Sep
Severe
Westbound Starting soon 🌙 tonight
M4 Westbound Jct 1 to Jct 3 carriageway closure
Overall Scheme Details: M4 Westbound Jct 1 to Jct 3
Carriageway closure for maintenance work
Diversion: Diversion via local authority network
✅ until 06:30 Wed 23 Sep
Severe
Eastbound Starting soon 🌙 tonight
M4 Eastbound Jct 3 to Jct 1 carriageway closure
Overall Scheme Details: M4 Eastbound Jct 3 to Jct 1
Carriageway closure for maintenance works
Diversion: Diversion via Local Authority network
✅ until 06:30 Wed 23 Sep
Severe
Eastbound Starting soon 🌙 tomorrow night
M4 eastbound Jct 22 entry slip road carriageway closure
Overall Scheme Details: M4 eastbound Jct 22 entry slip closure for electrical work
Diversion: Diversion via M49 south, M5 north
✅ until 07:00 Thu 24 Sep
Moderate
Westbound Starting soon 🌙 Thu 24 Sep
M4 westbound Jct 7 exit slip road closure
Overall Scheme Details: M4 westbound Jct 7 - slip road and lane closures for drainage works.
✅ until 07:00 Fri 25 Sep
Moderate
Westbound Starting soon 🌙 Thu 24 Sep
M4 westbound Jct 7 entry slip road closure
Overall Scheme Details: M4 westbound Jct 7 - slip road and lane closures for drainage works.
✅ until 07:00 Fri 25 Sep
❓ M4 roadworks — Frequently Asked Questions
Are there roadworks on the M4 right now?
No roadworks are currently running on the M4 according to National Highways.
Is the M4 closed tonight?
12 closures are scheduled on the M4 in the next 72 hours. Each one is listed above with its window and diversion.
When are M4 roadworks usually carried out?
Most National Highways lane closures on the M4 run overnight and are lifted before the morning peak (07:00–09:30). Full carriageway closures are usually weekend nights, with a signed diversion.
🛣️ Data from National Highways ·
All UK roadworks ·
Overnight closures ·
M4 live traffic
Roadworks change at short notice. Always follow signs and signals on the road.