M4 J3-12 smart motorway

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M4 smart motorway work closure update for the week commencing 13 April 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 9pm and taken off by 6am).

The Government has announced the results of the smart motorways safety audit. The programme will continue and there is an 18 point plan to improve safety. You can read the full report and a statement from the Secretary of State for Transport here: https://www.gov.uk/government/news/action-plan-announced-to-boost-smart-motorway-safety

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

  • NEXT FULL WEEKEND CLOSURE 24-27 APRIL 2020: The M4 between junctions 6 and 8/9 will be closed in both directions from approximately 8pm Friday 24 April until 6am on Monday 27 2020 for installation of a new bridge deck at Marsh Lane. 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 3 (Hayes) and 4b (M25) will be closed overnight on Tuesday 14 & Wednesday 15 April 2020. Clearly signed diversions will be in place utilising the local and strategic road network.
  • The M4 eastbound carriageway over Junction 3 (Hayes) will be closed overnight on Wednesay 15 & Thursday 16 April 2020. Drivers will need to exit and rejoin at Junction 3 to continue eastbound.
  • The M4 eastbound carriageway between junctions 4b (M25) and 3 (Hayes) will be closed overnight on Friday 17 & Saturday 18 April 2020. Clearly signed diversions will be in place utilising the local and strategic road network.
  • The M4 westbound carriageway between junctions 6 (Slough-Windsor) and 8/9 (Maidenhead) will be closed overnight on Tuesday 14 & Thursday 16 April 2020. Clearly signed diversions will be in place utilising the A355, A332, A308 and A308M.
  • There are also slip road closures booked as follows:

  • Junction 7 - the eastbound entry slip will be closed overnight on 14, 15 & 16 April.
  • Junction 7 - the westbound exit slip will be closed overnight on 15 & 17 April.
  • Junction 8/9 - the eastbound entry slip will be closed overnight on 14 April.
  • Junction 10 - the westbound entry slip from the A329M northbound (slip road 2) will be closed overnight on 14, 15 & 16 April.
  • Junction 10 ā€“ the eastbound entry slip from the A329M southbound (slip road 4) will be closed overnight on 14, 15 & 17 April.
  • 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 13th April 2020

    by M4 J3 to 12 Communications Team