M4 junctions 8/9 at Maidenhead to 12 at Theale, Berkshire: upgrade to smart motorway
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 between approximately 10pm and 5am (traffic management will usually be rolled out from 9pm and taken off by 6am).
Please be advised of three upcoming full weekend closures (8pm Friday until 6am Monday) of the M4 in both directions this Autumn:
27-30 September 2019 – between junctions 5 to 6 15-18 November 2019 – between junctions 6 to 8/9 29 November-2 December 2019 junctions 6 to 8/9Full closures booked for the week commencing Monday 9th September 2019 are as follows:
The M4 between junctions 10 (Wokingham) and 11 (Reading) will be closed overnight in both directions on Tuesday 10th September. Clearly signed diversions will be in place utilising the A329M, A3290, and the B3270. This double closure is for the overnight installation of a super span gantry. The M4 eastbound carriageway between junctions 10 (Wokingham) and 8/9 (Maidenhead) will be closed overnight on Thursday 12th September. Clearly signed diversions will be in place utilising the A329M, A3290, A4 and A404M.There are also slip road closures booked as follows:
Junction 8/9 – the eastbound entry slip will be closed overnight on 9th, 10th, and 11th September. Junction 8/9 – the eastbound exit slip will be closed overnight on 9th, 10th, and 11th September. Junction 8/9 – the westbound entry slip will be closed overnight on 11th and 12th September. Junction 8/9 – the westbound exit slip will be closed overnight on 13th September. Junction 10 – the westbound entry slip from the A329M northbound (slip road 2) will be closed overnight on 12th September. Junction 10 – the eastbound entry from A329M southbound (slip road 4) will be closed overnight on 13th September. Junction 11 – the eastbound entry slip will be closed overnight on 9th September. Junction 12 – the westbound exit slip will be closed overnight on 9th and 10th September. Junction 12 – the eastbound entry slip will be closed overnight on 11th and 12th September.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.