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?

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M4 eastbound within J4B | Eastbound | Congestion
Fri, 20 Dec 2024 02:09:20 GMT
M4 Current Traffic Incidents
Location : The M4 eastbound at junction J4B . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 02:00 and 02:15 on 20 December 2024. Delay : There are currently delays of 10 minutes against expected traffic.

M4 westbound between J2 and J3 | Westbound | Road Works
Thu, 19 Dec 2024 22:08:13 GMT
M4 Roadworks
Location : The M4 westbound between junctions J1 and J3 . Reason : Roadworks. Status : Currently Active. Period : from 22:06 on 19 December 2024 to 05:00 on 20 December 2024. Lanes Closed : All lanes are closed.

M4 J11 westbound access | Westbound | Congestion
Thu, 19 Dec 2024 18:27:19 GMT
M4 Current Traffic Incidents
Location : The M4 westbound entry slip at junction J11 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 18:30 and 18:45 on 19 December 2024. Delay : There are currently delays of 10 minutes against expected traffic.

M4 westbound between J10 and J11 | Westbound | Congestion
Thu, 19 Dec 2024 18:45:36 GMT
M4 Current Traffic Incidents
Location : The M4 westbound between junctions J10 and J11 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 19:15 and 19:30 on 19 December 2024. Cause : Road traffic collision. Delay : There are currently delays of 20 minutes against expected traffic.

M4 eastbound between J3 and J2 | Eastbound | Congestion
Thu, 19 Dec 2024 18:53:22 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 18:45 and 19:00 on 19 December 2024. Delay : There are currently delays of 10 minutes against expected traffic.

Map of M4 Motorway Junctions

West M4

East M4

How Do I Find M4 Traffic News?

Latest M4 News