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Map of M4 Motorway Junctions

Map of the M4 motorway junctions.

map of main M4 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".

Latest M4 Traffic News Updates

M4 J8 eastbound exit | Eastbound | Broken down vehicle
Thu, 17 Jun 2021 22:40:43 GMT
M4 Current Traffic Incidents
Location : The M4 eastbound exit slip at junction J8 . Lane Closures : Lane one is closed. Reason : Broken down vehicle. Status : Currently Active. Time To Clear : The event is expected to clear between 00:15 and 00:30 on 18 June 2021. Return To Normal : Normal traffic conditions are expected between 00:15 and 00:30 on 18 June 2021. Lanes Closed : There is one of two lanes closed.
M4 J15 eastbound exit | Eastbound | Congestion
Thu, 17 Jun 2021 21:32:24 GMT
M4 Current Traffic Incidents
Location : The M4 eastbound exit slip at junction J15 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 22:30 and 22:45 on 17 June 2021. Delay : There are currently delays of 10 minutes against expected traffic.
M4 J5 westbound access | Westbound | Road Works
Thu, 17 Jun 2021 21:29:39 GMT
M4 Roadworks
Location : The M4 westbound entry slip at junction J5 . Reason : Roadworks. Status : Currently Active. Period : from 22:28 on 17 June 2021 to 05:30 on 18 June 2021. Lanes Closed : All lanes are closed.
M4 westbound between J5 and J6 | Westbound | Road Works
Thu, 17 Jun 2021 21:27:29 GMT
M4 Roadworks
Location : The M4 westbound between junctions J5 and J6 . Reason : Roadworks. Status : Currently Active. Period : from 22:26 on 17 June 2021 to 05:30 on 18 June 2021. Lanes Closed : All lanes are closed.
M4 westbound within J5 | Westbound | Road Works
Thu, 17 Jun 2021 21:12:32 GMT
M4 Roadworks
Location : The M4 westbound at junction J5 . Lane Closures : Lanes 2 and 3 will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : From 22:00 on 24 June 2021 to 05:30 on 25 June 2021. Lanes Closed : There will be two of three lanes closed.

Latest M4 Traffic News Updates

Latest M4 News

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