M4 J3-12 smart motorway

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M4 smart motorway closure this weekend and update for the week commencing 4 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).

Our April newsletter , with details of weekend M4 closures is out and can be read here .

  • FULL WEEKEND CLOSURE STARTS TONIGHT BETWEEN JUNCTIONS 5 & 6: The M4 between junctions 5 and 6 be closed in both directions from approximately 8pm this evening until 6am on Monday 4 May 2020 for installation of a new bridge deck at Recreation Ground bridge. Traffic will be diverted to the A4 and the A355. Strategic diversions will also be in place in the wider region using the M25, M3 and M40.
  • NEXT WEEKEND CLOSURE, 15-18 MAY: The M4 between junctions 6 and 8/9 will be closed in both directions from approximately 8pm Friday 15 May until 6am on Monday 18 May 2020 for installation of a new bridge decks at Ascot Road and Wood Lane bridges. 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.
  • Overnight full closures next week are as follows:

  • The M4 westbound carriageway between junctions 6 (Slough-Windsor) and 8/9 (Maidenhead) will be closed overnight on Monday 4 and Tuesday 5 May 2020. Clearly signed diversions will be in place utilising the A355, A332, A308, and the A308M.
  • The M4 eastbound carriageway between junctions 10 (Wokingham) and 8/9 (Maidenhead) will be closed overnight on Monday 4 and Tuesday 5 May 2020. Clearly signed diversions will be in place utilising the A329M, A3290, A4 & A404M.
  • The M4 will be closed overnight in both directions between junctions 10 (Wokingham) and 11 (Reading) on Wednesday 6 May 2020 for gantry installation. Clearly signed diversions will be in place utilising the A329M, A3290 & B3270.
  • The M4 eastbound carriageway between junctions 8/9 (Maidenhead) and 6 (Slough-Windsor) will be closed overnight on Thursday 7 May 2020. Clearly signed diversions will be in place utilising the A308M, A308, A332, and the A355.
  • There are also slip road closures booked as follows:

  • Junction 10 - the eastbound entry slip from the A329M southbound (slip road 4) will be closed overnight on 4, 5, & 6 May.
  • Junction 10 - the eastbound entry slip from the A329M northbound (slip road 5) will be closed overnight on 6 & 7 May.
  • 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 1st May 2020

    by M4 J3 to 12 Communications Team