M4 J3-12 smart motorway

Get project news

Do you want to receive an email when news items are posted?

News on M4 J3-12 smart motorway

Back to news

M4 smart motorway work closure update for the week commencing 25 May 2020

Work to improve journeys by converting the M4 into a smart motorway between Junctions 3 at Hayes to Junction 12 at Theale continues this week. 24 hour narrow lanes and a 50mph speed restriction are in place for sections of this stretch of the M4. Carriageway and slip road closures are planned as follows, all fully closed overnight (traffic management will usually be rolled out from 10pm and taken off by 6am).

  • NEXT WEEKEND CLOSURE 29 MAY-1 JUNE, JUNCTIONS 6 TO 8/9: The M4 between junctions 6 and 8/9 will be closed in both directions from approximately 8pm Friday evening 29 May until 6am on Monday 1 June 2020 for installation of new beams to widen the M4 bridge over the River Thames at Bray. Traffic will be diverted to the A308M, A308, A332 and the A355. Strategic diversions will also be in place in the wider region using the M25, M3 and M40.
  • There will be another weekend closure for this work between junctions 6 and 8/9 over the weekend of 5-8 June 2020 (plus a contingency weekend over 12-15 June if required). The next weekend closure scheduled after these is between junctions 4b and 5 over the weekend of 26-29 June 2020.
  • Our May news bulletin is out, read it here.....

    No overnight full closures this weekend or next week, just a few slip road closures booked as follows:

  • Junction 7 - the eastbound entry slip will be closed overnight on 26, 27 & 28 May 2020.
  • Junction 10 - the eastbound entry slip from the A329M southbound (slip road 4) will be closed overnight on 26, 27, 28 & 29 May.
  • Junction 10 - the eastbound entry slip from the A329M northbound (slip road 5) will be closed overnight on 27 & 28 May.
  • Junction 11 - the eastbound exit slip will be closed overnight on 26 & 27 May 2020
  • Junction 12 - the eastbound entry slip will be closed overnight on 26 & 27 May 2020.
  • In the event of poor weather conditions or other issues out of our control, planned work may be postponed at short notice. Contingency bookings are also in place, but these are only used if previously planned work is delayed and there is no clash with other closures. If work completes on an earlier day the motorway may not close, or if work completes ahead of schedule the motorway may reopen early. Signage will be in place on the network to notify of closures and diversions. The project is continuing but all our work is under careful review in response to the Covid-19 outbreak and safety measures are in place on site to protect workers, their families and the public.

    Posted on 22nd May 2020

    by M4 J3 to 12 Communications Team