Map of M4 Motorway Junctions

Map of the M4 motorway junctions.

West M4

To the West the M4 joins the M5 at M4 Junction 20 which heads north to Devon Cornwall and the South West of England.

The Western end of the M4 is in South Wales Junctions 23 to 48. Bridgend is on Junctions 25 to 37, M4 Junctions 44 and 45 for Swansea, Junctions 30 to 33 for Cardiff and Junctions 24 to 28 for Newport.

East M4

At the eastern end of the M4 is London, with Junctions for Slough, Reading, Newbury, Swindon and Bristol on the way to Wales in the West.

How Do I Find M4 Traffic News?

Simply type the search words in the search facility towards the top right of this page and click "search".

M4 J18 westbound access | Westbound | Vehicle Recovery
Tue, 17 Sep 2024 14:17:58 GMT
M4 Current Traffic Incidents
Location : The M4 westbound entry slip at junction J18 . Lane Closures : The hard shoulder and lane 1 are closed. Reason : Vehicle tyre change. Status : Currently Active. Time To Clear : The event is expected to clear between 15:45 and 16:00 on 17 September 2024. Return To Normal : Normal traffic conditions are expected between 15:45 and 16:00 on 17 September 2024. Lanes Closed : There is one of two lanes closed.

M4 westbound within J18 | Westbound | Vehicle Recovery
Tue, 17 Sep 2024 14:15:19 GMT
M4 Current Traffic Incidents
Location : The M4 westbound at junction J18 . Lane Closures : The hard shoulder and lane 1 are closed. Reason : Vehicle tyre change. Status : Currently Active. Time To Clear : The event is expected to clear between 15:45 and 16:00 on 17 September 2024. Lanes Closed : There is one of three lanes closed.

M4 westbound between J5 and J6 | Westbound | Congestion
Tue, 17 Sep 2024 13:06:29 GMT
M4 Current Traffic Incidents
Location : The M4 westbound between junctions J5 and J6 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 14:00 and 14:15 on 17 September 2024. Delay : There are currently delays of 10 minutes against expected traffic.

M4 eastbound between J14 and J13 | Eastbound | Road Works
Tue, 17 Sep 2024 14:04:00 GMT
M4 Roadworks
Location : The M4 eastbound between junctions J14 and J13 . Lane Closures : Lane one will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : From 20:00 on 19 September 2024 to 06:00 on 20 September 2024. Lanes Closed : There will be one of three lanes closed.

M4 westbound between J13 and J14 | Westbound | Road Works
Tue, 17 Sep 2024 14:04:00 GMT
M4 Roadworks
Location : The M4 westbound between junctions J13 and J14 . Lane Closures : Lane one will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : From 20:00 on 19 September 2024 to 06:00 on 20 September 2024. Lanes Closed : There will be one of three lanes closed.

Map of M4 Motorway Junctions

West M4

East M4

How Do I Find M4 Traffic News?

Latest M4 News