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.

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link road from M25 J15 clockwise to M4 J4B eastbound | Eastbound | Broken down vehicle
Sat, 24 Oct 2020 15:35:03 GMT
M4 Current Traffic Incidents
Location : The M4 eastbound entry slip at junction J4B from the M25 clockwise. Reason : Broken down vehicle. Status : Currently Active. Time To Clear : The event is expected to clear between 17:15 and 17:30 on 24 October 2020. Return To Normal : Normal traffic conditions are expected between 17:15 and 17:30 on 24 October 2020. Lanes Closed : There are lane closures.

M4 J15 westbound exit | Westbound | Congestion
Sat, 24 Oct 2020 12:18:16 GMT
M4 Current Traffic Incidents
Location : The M4 westbound exit slip at junction J15 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 13:15 and 13:30 on 24 October 2020. Delay : There are currently delays of 10 minutes against expected traffic.

M4 westbound between J6 and J7 | Westbound | Congestion
Sat, 24 Oct 2020 11:16:19 GMT
M4 Current Traffic Incidents
Location : The M4 westbound between junctions J6 and J7 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 12:15 and 12:30 on 24 October 2020. Delay : There are currently delays of 10 minutes against expected traffic.

M4 J7 westbound exit | Westbound | Congestion
Sat, 24 Oct 2020 11:28:18 GMT
M4 Current Traffic Incidents
Location : The M4 westbound between junctions J6 and J7 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 12:30 and 12:45 on 24 October 2020. Delay : There are currently delays of 20 minutes against expected traffic.

M4 J15 westbound exit | Westbound | Congestion
Sat, 24 Oct 2020 11:30:16 GMT
M4 Current Traffic Incidents
Location : The M4 westbound exit slip at junction J15 . Reason : Congestion. Status : Currently Active. Return To Normal : Normal traffic conditions are expected between 12:30 and 12:45 on 24 October 2020. 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