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 westbound between junctions J7 and J10 . Lane Closures : Lanes 2 and 3 are closed. Reason : Planned Roadworks. Status : Currently Active. Period : expect disruption until 06:00 on 23 March 2017. Lanes Closed : There are two of three lanes closed.

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Location : The M4 westbound entry slip at junction J11 . Reason : Roadworks. Status : Currently Active. Period : from 21:02 on 22 March 2017 to 06:00 on 23 March 2017. Lanes Closed : All lanes are closed.

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Location : The M4 westbound between junctions J10 and J12 . Lane Closures : The hard shoulder, lanes 1 and 2 are closed. Reason : Roadworks. Status : Currently Active. Period : expect disruption until 06:00 on 23 March 2017. Lanes Closed : There are two of three lanes closed.

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Location : The M4 eastbound between junctions J3 and J2 . Reason : Road repairs. Status : Currently Active. Period : expect disruption until 05:00 on 23 March 2017. Lanes Closed : All lanes are closed.

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Location : The M4 eastbound between junctions J13 and J12 . Lane Closures : The hard shoulder and lane 1 are closed. Reason : Roadworks. Status : Currently Active. Period : expect disruption until 06:00 on 23 March 2017. Lanes Closed : There is one 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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