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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 J4 eastbound access | Eastbound | Congestion
Tue, 15 Oct 2019 17:19:37 GMT
M4 Current Traffic Incidents
Location : The M4 eastbound entry slip at junction J4 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 18:15 and 18:30 on 15 October 2019. Delay : There are currently delays of 10 minutes against expected traffic.
M4 westbound between J1 and J2 | Westbound | Broken down vehicle
Tue, 15 Oct 2019 17:17:17 GMT
M4 Current Traffic Incidents
Location : The M4 westbound between junctions J1 and J2 . Lane Closures : Lane one is closed. Reason : Broken down vehicle. Status : Currently Active. Time To Clear : The event is expected to clear between 18:45 and 19:00 on 15 October 2019. Return To Normal : Normal traffic conditions are expected between 19:15 and 19:30 on 15 October 2019. Lanes Closed : There is one of two lanes closed.
M4 J18 eastbound exit | Eastbound | Road Works
Tue, 15 Oct 2019 14:33:04 GMT
M4 Roadworks
Location : The M4 eastbound exit slip at junction J18 . Lane Closures : Lane one will be closed. Reason : Road repairs are planned. Status : Pending. Schedule : From 20:00 on 18 October 2019 to 06:00 on 21 October 2019. Lanes Closed : There will be one of two lanes closed.
M4 J18 westbound exit | Westbound | Road Works
Tue, 15 Oct 2019 14:33:04 GMT
M4 Roadworks
Location : The M4 westbound exit slip at junction J18 . Lane Closures : Lane one will be closed. Reason : Road repairs are planned. Status : Pending. Schedule : From 20:00 on 18 October 2019 to 06:00 on 21 October 2019. Lanes Closed : There will be one of two lanes closed.
M4 eastbound between J5 and J4B | Eastbound | Accident
Tue, 15 Oct 2019 13:36:59 GMT
M4 Current Traffic Incidents
Location : The M4 eastbound between junctions J5 and J4B . Lane Closures : The hard shoulder and lane 1 are closed. Reason : Road traffic collision. Status : Currently Active. Time To Clear : The event is expected to clear between 15:30 and 15:45 on 15 October 2019. Return To Normal : Normal traffic conditions are expected between 15:30 and 15:45 on 15 October 2019. Lanes Closed : There is one of four lanes closed.

Latest M4 Traffic News Updates

Latest M4 News

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