M4

The M4 motor­way is part of both the Eng­lish and Welsh road net­work, con­nect­ing Lon­don to South Wales.

Major des­ti­na­tions directly acces­si­ble from the M4 junc­tions include Heathrow Air­port, Read­ing, Swin­don, Bris­tol, New­port, Cardiff and Swansea.

There are 120.7 miles of the M4 motor­way in Eng­land, includ­ing the sec­ond Sev­ern Cross­ing which opened in 1996. The orig­i­nal Sev­ern cross­ing built in 1966 is now car­ries the M48.

M4 Traffic Information

Location : The M4 eastbound exit slip at junction J10 . Lane Closures : Lanes 1 and 2 will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : From 21:00 on 1 September 2017 to 06:00 on 4 September 2017. Schedule : From 21:00 on 29 September 2017 to 06:00 on 2 October 2017. Schedule : From 21:00 on 8 October 2017 to 06:00 on 9 October 2017. Lanes Closed : All lanes will be closed.

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Location : The M4 westbound between junctions J4 and J4B . Lane Closures : Lanes 1 and 2 will be closed. Reason : Road repairs are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 05:00 from 2 May 2017 to 5 May 2017. Schedule : From 23:00 on 5 May 2017 to 05:00 on 6 May 2017. Schedule : Expect disruption everyday between 22:00 and 05:00 from 8 May 2017 to 12 May 2017. Schedule : From 23:00 on 12 May 2017 to 05:00 on 13 May 2017. Lanes Closed : There will be two of four lanes closed.

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Location : The M4 westbound at junction J4 . Lane Closures : Lanes 1 and 2 will be closed. Reason : Road repairs are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 05:00 from 2 May 2017 to 5 May 2017. Schedule : From 23:00 on 5 May 2017 to 05:00 on 6 May 2017. Schedule : Expect disruption everyday between 22:00 and 05:00 from 8 May 2017 to 12 May 2017. Schedule : From 23:00 on 12 May 2017 to 05:00 on 13 May 2017. Lanes Closed : There will be two of three lanes closed.

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Location : The M4 westbound entry slip at junction J4 . Lane Closures : Lane one will be closed. Reason : Road repairs are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 05:00 from 2 May 2017 to 5 May 2017. Schedule : From 23:00 on 5 May 2017 to 05:00 on 6 May 2017. Schedule : Expect disruption everyday between 22:00 and 05:00 from 8 May 2017 to 13 May 2017. Lanes Closed : There will be one of two lanes closed.

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Location : The M4 eastbound between junctions J10 and J7 . Lane Closures : Lanes 1 and 2 will be closed. Reason : Roadworks are planned. Status : Pending. Schedule : Expect disruption everyday between 22:00 and 06:00 from 2 May 2017 to 6 May 2017. Schedule : Expect disruption everyday between 22:00 and 06:00 from 8 May 2017 to 13 May 2017. Lanes Closed : There will be two of three lanes closed.

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M4 Road Projects

M4 junction 10 bridge refurbishment

Essen­tial bridge recon­struc­tion work to the bridges which carry the link roads between the A329(M) and the M4 motorway

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M4 J19 - 20 Winterbourne Lane Underbridge

Repairs to stop water leak­age caus­ing cor­ro­sion to the under­side of the bridge

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M4 Chieveley Bridge Refurbishment Schemes

Refur­bish­ment of three bridges at M4 Chieveley

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M4 Junction 10 Congestion Relief Improvement

A scheme will improve the links between the M4 and A329(M), to pro­vide increased capac­ity at the junc­tion and improve traf­fic flows.

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M4 Junctions 3-12

We pro­pose to improve the M4 by mak­ing it a “smart motor­way” between junc­tions 3 and 12. Smart motor­ways help relieve con­ges­tion by using technology

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