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 westbound between J8 and J10 | Westbound | Road Works
Sun, 25 Sep 2016 01:21:40 BST
M4 Roadworks
Period : expect disruption until 06:00 on 25 September 2016. Status : Currently Active. Lane Closures : Lane three is closed. Location : The M4 westbound between junctions J8 and J10 . Lanes Closed : There is one of three lanes closed. Reason : Emergency barrier repairs.

M4 J3 westbound access | Westbound | Road Works
Sat, 24 Sep 2016 05:05:18 BST
M4 Roadworks
Status : Pending. Lane Closures : Lane one will be closed. Schedule : Expect disruption everyday between 22:00 and 05:00 from 26 September 2016 to 30 September 2016. Location : The M4 westbound entry slip at junction J3 . Lanes Closed : There will be one of two lanes closed. Reason : Emergency barrier repairs are planned.

M4 eastbound between J13 and J12 | Eastbound | Road Works
Sat, 24 Sep 2016 05:05:18 BST
M4 Roadworks
Status : Pending. Lane Closures : Lanes 1, 2 and 3 will be closed. Schedule : Expect disruption everyday between 21:00 and 06:00 from 3 October 2016 to 7 October 2016. Location : The M4 eastbound between junctions J13 and J10 . Lanes Closed : All lanes will be closed. Reason : Road repairs are planned.

M4 eastbound between J13 and J12 | Eastbound | Road Works
Sat, 24 Sep 2016 05:05:18 BST
M4 Roadworks
Period : expect disruption until 06:00 on 29 October 2016. Location : The M4 eastbound between junctions J13 and J12 . Status : Currently Active. Lane Closures : The hard shoulder is closed. Reason : Roadworks.

Map of M4 Motorway Junctions

West M4

East M4

How Do I Find M4 Traffic News?

Latest M4 News