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The Welsh Government’s traffic information service for motorways and trunk roads in Wales

A465 Brynmawr to Gilwern Road Widening Scheme - planned road closures

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Image displaying the A465 works

The A465 will be changed to 2 lanes in each direction from Glanbaiden junction at Gilwern to Brynmawr roundabout.

For more information about this project, please see Welsh Government links on the right, for information on traffic management see details below.

This work is taking place on an 8km section of the A465 road, between Brynmawr and Gilwern. The existing A465 was built in the 1960s and a traffic study identified the need to improve the road by:

  • making the road safer, especially around junctions and areas with poor visibility
  • improving traffic flow and making it safer to overtake

To complete these complex and long term roadworks, the contractor will sometimes need to:

  • reduce the road from 3 lanes to 2.
  • close sections of the road overnight or over weekends
  • use traffic lights to control traffic flow during the works.

Please find the latest diversion routes: https://a465.info/official-diversion and latest road layout: https://a465.info/summary

Motorists will be able to cross the A465 at Saleyard from Station Road in the south to Main Road in the north and vice versa. Motorists will also be able to cross the A465 using side roads, at Gilwern from Station Road in the south to Main Road in the north and vice versa.

Emergency vehicles are able to pass through the works during the closures. The road can also be reopened in the event of disruption on the M4.

Planned closures of the Brynmawr slip roads are as follows:

18/10/21 – 19/10/21

20:30 - 06:00 Brynmawr eastbound exit slip road and westbound entry slip road closures for one night.  

19/10/21 – 20/10/21

20:30 - 06:00 Brynmawr eastbound exit slip road closure for one night.

20/10/21 – 22/10/21

20:30 - 06:00 Brynmawr eastbound exit slip road and westbound entry slip road closures for two nights.

Full weekend closures in both directions from Brynmawr Roundabout to Glanbaiden Roundabout, Gilwern will take place on:

  • 29th October - 1st November 2021

The dates may be changed for various reasons, such as bad weather. For the latest scheme updates see:https://www.facebook.com/A465Section2/ 

Follow @TrafficWalesS on Twitter for the latest traffic management measures on this road.

Follow @A465_Section2 on Twitter and Facebook https://www.facebook.com/A465Section2/ for the latest scheme updates.

For community queries or complaints please call 0845 600 2664 or email [email protected].


Call the Traffic Wales information line
0300 123 1213
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