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 eastbound between J13 and J12 | Eastbound | Roadworks
Sun, 20 Apr 2014 13:05:50 BST
Latest M4 Traffic News - Highways Agency
On the M4 eastbound between junctions J13 and J12, expect delays of up to 10 mins at peak times due to roadworks closing two lanes, from 9 pm on 26 April 2014 to 6 am on 27 April 2014.

M4 westbound between J16 and J17 | Westbound | Roadworks
Wed, 16 Apr 2014 02:28:10 BST
Latest M4 Traffic News - Highways Agency
On the M4 westbound between junctions J16 and J17, expect delays of up to 10 mins at peak times due to roadworks closing two lanes, between 8 pm and 5 am, from 23 April 2014 to 24 April 2014.

M4 westbound between J17 and J18 | Westbound | Roadworks
Wed, 16 Apr 2014 02:20:21 BST
Latest M4 Traffic News - Highways Agency
On the M4 westbound between junctions J17 and J18, expect delays of up to 10 mins at peak times due to roadworks closing two lanes, between 8 pm and 5 am, from 23 April 2014 to 24 April 2014.

M4 westbound between J10 and J11 | Westbound | Roadworks
Wed, 16 Apr 2014 02:19:06 BST
Latest M4 Traffic News - Highways Agency
On the M4 westbound between junctions J10 and J11, expect delays of up to 10 mins at peak times due to roadworks closing two lanes, between 9 pm and 6 am, from 23 April 2014 to 24 April 2014.

M4 eastbound between J18 and J17 | Eastbound | Roadworks
Tue, 15 Apr 2014 17:48:39 BST
Latest M4 Traffic News - Highways Agency
On the M4 eastbound between junctions J18 and J17, expect delays of up to 10 mins at peak times due to roadworks closing two lanes, from 8 pm on 22 April 2014 to 5 am on 23 April 2014.

Map of M4 Motorway Junctions

West M4

East M4

How Do I Find M4 Traffic News?

Latest M4 News