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 J5 eastbound access | Eastbound | Road Works
Wed, 29 Nov 2023 22:21:09 GMT
M4 Roadworks
Location : The M4 eastbound entry slip at junction J5 . Lane Closures : Lanes 1 and 2 will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 05:30 from 6 December 2023 to 8 December 2023. Lanes Closed : All lanes will be closed.

M4 J7 eastbound access | Eastbound | Road Works
Wed, 29 Nov 2023 21:11:52 GMT
M4 Roadworks
Location : The M4 eastbound entry slip at junction J7 . Lane Closures : Lanes 1 and 2 will be closed. Reason : Barrier repairs are planned. Status : Pending. Schedule : From 21:00 on 6 December 2023 to 06:00 on 7 December 2023. Lanes Closed : All lanes will be closed.

M4 eastbound between J3 and J2 | Eastbound | Congestion
Wed, 29 Nov 2023 17:17:46 GMT
M4 Current Traffic Incidents
Location : The M4 eastbound between junctions J3 and J2 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 17:15 and 17:30 on 29 November 2023. Delay : There are currently delays of 10 minutes against expected traffic.

M4 eastbound between J13 and J12 | Eastbound | Road Works
Wed, 29 Nov 2023 20:14:24 GMT
M4 Roadworks
Location : The M4 eastbound between junctions J13 and J12 . Reason : Roadworks. Status : Currently Active. Period : from 20:13 on 29 November 2023 to 06:00 on 30 November 2023. Lanes Closed : All lanes are closed.

M4 westbound between J14 and J15 | Westbound | Road Works
Wed, 29 Nov 2023 20:22:53 GMT
M4 Roadworks
Location : The M4 westbound between junctions J14 and J15 . Lane Closures : Lanes 1 and 2 will be closed. Reason : Road repairs are planned. Status : Pending. Schedule : From 20:00 on 6 December 2023 to 06:00 on 7 December 2023. Lanes Closed : There will be two of three lanes closed.

Map of M4 Motorway Junctions

West M4

East M4

How Do I Find M4 Traffic News?

Latest M4 News