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M4 Motorway, Junction 17 To 18 - Temporary Restriction And Prohibition Of Traffic To Drainage Works
What is happening?
ROAD TRAFFIC REGULATION ACT 1984 - SECTION 14(1)(a)
THE M4 MOTORWAY (JUNCTION 17 TO 18)
(TEMPORARY RESTRICTION AND PROHIBITION OF TRAFFIC) ORDER 2026
NOTICE IS HEREBY GIVEN that National Highways Limited (a) intends to make an Order on the M4 Motorway in South Gloucestershire and Wiltshire to allow drainage works and associated maintenance to be carried out in safety.
The works are expected to take place commencing on or after 1 November 2026 and be completed by 30 April 2027.
The effect of the Order would be to:
(a) impose a mandatory 50 mph speed limit on the M4 eastbound and westbound between 1800 metres west of the B4039 overbridge and 1000 metres east of Marsh Lane overbridge
(b) prohibit vehicles over 2.00 meters in width from the outside lane of the length of the M4 given at (a) above:
(c) authorise the closure overnight (20.00 to 06.00) of:
(i) the M4 eastbound and westbound between Junctions 17 and 18;
(ii) the eastbound entry and westbound exit slip roads at Junction 18;
(iii) the westbound entry and eastbound exit slip roads at Junction 17;
(iv) the eastbound and westbound entry and exit slip roads at Leigh Delamere Service Area
There would also be hard shoulder running through the works.
During the closures traffic would be diverted via junctions of the M4 and local roads.
The speed limit (which would not apply to emergency service vehicles), width restrictions, contraflow and closures would be clearly indicated by traffic signs throughout the works.
The Order would come into force on 29 October 2026 and have a maximum duration of 18 months.
Paul Edwards, National Highways Company Limited.
(a) Registered in England and Wales under company no 9346363. Registered office Three Snowhill, Snow Hill Queensway, Birmingham, B4 6GA.
General Enquiries relating to this notice may be made in writing to the Project Manager, Mark Fitzgerald at National Highways Ltd, Brunel House, 930 Hempton Court, Aztec West, Almondsbury, Bristol, BS32 4SR, by telephoning 0300 470 5304 or by email to mark.fitzgerald@nationalhighways.co.uk.
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