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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 westbound within J10 after A329(M) eastbound access | Westbound | Congestion
Fri, 23 Aug 2019 14:30:17 GMT
M4 Current Traffic Incidents
Location : The M4 westbound at junction J10 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 15:30 and 15:45 on 23 August 2019. Delay : There are currently delays of 10 minutes against expected traffic.
M4 westbound between J10 and J11 | Westbound | Congestion
Fri, 23 Aug 2019 13:49:45 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 15:45 and 16:00 on 23 August 2019. Cause : Broken down vehicle. Delay : There are currently delays of 15 minutes against expected traffic.
M4 J11 westbound access | Westbound | Congestion
Fri, 23 Aug 2019 13:45:47 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 14:45 and 15:00 on 23 August 2019. Delay : There are currently delays of 10 minutes against expected traffic.
M4 J18 westbound exit | Westbound | Congestion
Fri, 23 Aug 2019 13:20:27 GMT
M4 Current Traffic Incidents
Location : The M4 westbound exit slip at junction J18 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 14:15 and 14:30 on 23 August 2019. Delay : There are currently delays of 10 minutes against expected traffic.
M4 westbound within J11 | Westbound | Congestion
Fri, 23 Aug 2019 13:10:05 GMT
M4 Current Traffic Incidents
Location : The M4 westbound between junctions J11 and J12 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 14:15 and 14:30 on 23 August 2019. Cause : Broken down vehicle. Delay : There are currently delays of 15 minutes against expected traffic.

Latest M4 Traffic News Updates

Latest M4 News

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