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M4 Road Closures
The M4 motorway is the third largest motorway in the UK and runs from London to South Wales. Acting as a vital connection between England and Wales.
The English section of the M4 runs all the way to the Severn Bridge and was constructed over a ten year period between 1961 and 1971.
The M4 is the only motorway in Wales and overall spans a distance of approximately 189 miles (or 304 km).
M4 Road Closures: Next 7 Days
Given the length and the high traffic usage of the M4, there are frequent repairs and roadworks required. Each week we compile a list of the planned road closures of the M4.
At present we have the 18/06/25 to 24/06/2025 planned road closure information.
Hopefully this can help you to better plan your journey and stay informed of potential delays.
| Road number | Direction | Location | Scheduled start date | Scheduled end date | Closure details, including diversions |
|---|---|---|---|---|---|
| M4 | Eastbound | M4 eastbound Jct 13 to Jct 12 carriageway closure | 18/06/2025 21:00 | 19/06/2025 06:00 | Overall Scheme Details: M4 eastbound Jct 13 to Jct 12. Carriageway and lane closures for resurfacing work. |
| M4 | Westbound | M4 westbound Jct 10 exit slip road closure | 18/06/2025 21:00 | 19/06/2025 06:00 | Overall Scheme Details: M4 westbound Jct 10. Slip road and lane closure for maintenance work. |
| M4 | Eastbound | M4 eastbound Reading Services exit and entry slip road closure | 18/06/2025 21:00 | 19/06/2025 06:00 | Overall Scheme Details: M4 eastbound Reading Services. Services and lane closure for maintenance work. |
| M4 | Westbound | M4 westbound Jct 19 entry slip road closed | 18/06/2025 22:00 | 19/06/2025 06:00 | Overall Scheme Details: M4 westbound Jct 19 to 20 carriageway closure for horticulture works Diversion following solid triangle, exit M32 at Jct 1, A4174, A38, join M5 northbound at Jct 16, join M4 westbound. |
| M4 | Westbound | M4 westbound Jct 19 to Jct 20 carriageway closure | 18/06/2025 22:00 | 19/06/2025 06:00 | Overall Scheme Details: M4 westbound Jct 19 to 20 carriageway closure for horticulture works Diversion following solid triangle, exit M32 at Jct 1, A4174, A38, join M5 northbound at Jct 16, join M4 westbound. |
| M4 | Eastbound | M4 eastbound Jct 13 to Jct 12 carriageway closure | 19/06/2025 21:00 | 20/06/2025 06:00 | Overall Scheme Details: M4 eastbound Jct 13 to Jct 12. Carriageway and lane closures for resurfacing work. |
| M4 | Eastbound | M4 eastbound Jct 11 entry slip road closure | 19/06/2025 21:00 | 20/06/2025 06:00 | Overall Scheme Details: M4 eastbound Jct 11. Slip road closure for barrier repairs. |
| M4 | Eastbound | M4 Eastbound Jct 4B exit slip road closure | 19/06/2025 22:00 | 20/06/2025 05:30 | Overall Scheme Details: M4 Eastbound Jct 4B Slip road closure for Midas works Diversion via National Highways roads |
| M4 | Eastbound | M4 Eastbound Jct 3 to Jct 1 carriageway closure | 19/06/2025 22:00 | 20/06/2025 05:30 | Overall Scheme Details: M4 Eastbound Jct 3 to Jct 1 Carriageway closure for SOS Box Investigations. Diversion via local authorities |
| M4 | Westbound | M4 westbound Jct 19 to Jct 20 carriageway closure | 19/06/2025 22:00 | 20/06/2025 06:00 | Overall Scheme Details: M4 westbound Jct 19 to 20 carriageway closure for horticulture works Diversion following solid triangle, exit M32 at Jct 1, A4174, A38, join M5 northbound at Jct 16, join M4 westbound. |
| M4 | Westbound | M4 westbound Jct 19 entry slip road closed | 19/06/2025 22:00 | 20/06/2025 06:00 | Overall Scheme Details: M4 westbound Jct 19 to 20 carriageway closure for horticulture works Diversion following solid triangle, exit M32 at Jct 1, A4174, A38, join M5 northbound at Jct 16, join M4 westbound. |
| M4 | Eastbound | M4 eastbound Jct 13 to Jct 12 carriageway closure | 20/06/2025 21:00 | 21/06/2025 06:00 | Overall Scheme Details: M4 eastbound Jct 13 to Jct 12. Carriageway and lane closures for resurfacing work. |
| M4 | Eastbound | M4 eastbound Jct 7 entry slip road closure | 20/06/2025 21:00 | 21/06/2025 06:00 | Overall Scheme Details: M4 eastbound Jct 7. Slip road and lane closures for barrier repairs. |
| M4 | Eastbound | M4 Eastbound Jct 4B exit slip road closure | 20/06/2025 23:00 | 21/06/2025 06:00 | Overall Scheme Details: M4 Eastbound Jct 4B Slip road closure for Midas works Diversion via National Highways roads |
| M4 | Eastbound | M4 Eastbound Jct 3 to Jct 1 carriageway closure | 20/06/2025 22:00 | 21/06/2025 05:30 | Overall Scheme Details: M4 Eastbound Jct 3 to Jct 1 Carriageway closure for SOS Box Investigations. Diversion via local authorities |
| M4 | Eastbound | M4 eastbound jct 20 exit slip closed | 20/06/2025 21:00 | 21/06/2025 06:00 | Overall Scheme Details: M4 Eastbound Jct 20 exit slip road closed - carriageway closure for drainage works - Diversion via M4 east to M32 Jct 1 and return M4 west Jct 20 to travel M5 north or south |
| M4 | Westbound | M4 westbound Jct 18 to 19 carriageway closed | 21/06/2025 20:30 | 22/06/2025 06:00 | Overall Scheme Details: M4 westbound Jct 18 to 19 carriageway closed for A432 Badminton Road overbridge works. Diversion via A46, A420, A4174 and M32. |
| M4 | Eastbound | M4 eastbound Jct 13 to Jct 12 carriageway closure | 23/06/2025 21:00 | 24/06/2025 06:00 | Overall Scheme Details: M4 eastbound Jct 13 to Jct 12. Carriageway and lane closures for resurfacing work. |
| M4 | Eastbound | M4 Eastbound Jct 3 to Jct 1 carriageway closure | 23/06/2025 22:00 | 24/06/2025 05:30 | Overall Scheme Details: M4 Eastbound Jct 3 to Jct 1 Carriageway closure for resurfacing. Diversion via local authorities |
| M4 | Southbound | M4 Eastbound Jct 20 to M5 Southbound Exit Slip Closure | 23/06/2025 22:00 | 24/06/2025 06:00 | Overall Scheme Details: M5 Southbound Jct 15 to Jct 17 - Carriageway Closures for Central Reservation Works - horticulture works Diversion M4 Eastbound to Jct 19, M32 Jct 1 A4174. A38, Hayes Way, Merlin Way Alternative M4 Westbound to Jct 22, Southbound on M49 |
| M4 | Southbound | M4 westbound jct 20 to M5 southbound link Closure | 23/06/2025 22:00 | 24/06/2025 06:00 | Overall Scheme Details: M5 Southbound Jct 15 to Jct 17 - Carriageway Closures for Central Reservation Works - horticulture works Diversion M4 Eastbound to Jct 19, M32 Jct 1 A4174. A38, Hayes Way, Merlin Way Alternative M4 Westbound to Jct 22, Southbound on M49 |
| M4 | Eastbound | M4 eastbound full closure of the Junction 19 entry slip. | 23/06/2025 21:00 | 24/06/2025 06:00 | Overall Scheme Details: M4 eastbound Jct 20 to Jct 19 and M32 Jct 1 to M4 Jct 19 Rbt - carriageway closure for barrier/fence safety repairs Diversion Via - M32 Jct 1, A4174 WB, Filton Rbt, A38 NB, M5 Jct 16, M5 NB, M5 to M4 Interchange, M4 Jct 19. |
| M4 | Eastbound | M4 eastbound Jct 13 to Jct 12 carriageway closure | 24/06/2025 21:00 | 25/06/2025 06:00 | Overall Scheme Details: M4 eastbound Jct 13 to Jct 12. Carriageway and lane closures for resurfacing work. |
| M4 | Eastbound | M4 Eastbound Jct 3 to Jct 1 carriageway closure | 24/06/2025 22:00 | 25/06/2025 05:30 | Overall Scheme Details: M4 Eastbound Jct 3 to Jct 1 Carriageway closure for resurfacing. Diversion via local authorities |
| M4 | Southbound | M4 Eastbound Jct 20 to M5 Southbound Exit Slip Closure | 24/06/2025 22:00 | 25/06/2025 06:00 | Overall Scheme Details: M5 Southbound Jct 15 to Jct 17 - Carriageway Closures for Central Reservation Works - horticulture works Diversion M4 Eastbound to Jct 19, M32 Jct 1 A4174. A38, Hayes Way, Merlin Way Alternative M4 Westbound to Jct 22, Southbound on M49 |
| M4 | Southbound | M4 westbound jct 20 to M5 southbound link Closure | 24/06/2025 22:00 | 25/06/2025 06:00 | Overall Scheme Details: M5 Southbound Jct 15 to Jct 17 - Carriageway Closures for Central Reservation Works - horticulture works Diversion M4 Eastbound to Jct 19, M32 Jct 1 A4174. A38, Hayes Way, Merlin Way Alternative M4 Westbound to Jct 22, Southbound on M49 |
This data was provided by National Highways and up to date as of 24/06/2025
M4 Travel Tips
The M4 is a vital connection from London to South Wales. As such it can be a very busy road to navigate.
Given the high volume of traffic that drives on the M4 on a regular basis, it is a good idea to avoid as much as possible heavy traffic.
Here are some tips to try and reduce the amount of time you are stuck in traffic on the M5:
- Before you begin your journey, quickly check the latest traffic reports. This is how you can identify any potential incidents or delays on your route. If there is a major delay record, then it will give you time to assess other travel or route options. Or at the least prepare you mentally for delays if you can’t avoid that section of road.
- There are a number of great traffic apps that can help you stay up to date with the latest information. Or, make sure that you are listening to the local radio stations for real-time traffic information. Staying aware of any updates after you have set off again allows you to make decisions to change routes if needed when on the road.
- Be prepared for different weather types. The weather can significantly impact your driving experience. Make sure your vehicle is equipped for any poor weather. Remember to adjust your driving to the conditions of the road.