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national highways

M25 Motorway (Junction 18) Temporary Overnight Closures due to highway maintenance works

Notice ID: MFN0657339

Notice effective from
6th May 2022 to 5th June 2022

national highways

Notice is hereby given that National Highways Limited intends to make an Order on the M25 Motorway in the County of Hertfordshire, under Section 14(1)(a) of the Road Traffic Regulation Act 1984 because works are proposed to be executed on an adjoining road.
The effect of the Order would be to authorise the phased overnight closure of all the slip roads leading to and from both carriageways of the M25 at Junction 18 (A404).
This measure would be in the interests of road safety while contractors working on behalf of Hertfordshire County Council undertake highway maintenance works on the adjoining A404 local road, which will be closed to traffic.
It is expected that the work would last for approximately one week, starting on or after 1st June 2022. The overnight closures would take place between 22:00 and 05:00 (maximum period).
The Order would come into force on 28th May 2022 and have a maximum duration of eighteen months, ceasing when the works are complete.
Traffic affected by the closure of the off-slips would be diverted on the M25 either to Junction 17(A405) or to Junction 19 (A41) as appropriate and then follow local diversion signage on the A41, A405 and A412. The on-slips will not be accessible when the A404 is closed. The temporary closures and diversion routes would be clearly indicated by traffic signs when they are in operation during the works period.

D Prestidge,
an Official of National Highways Limited.
Ref: HE/SE/2022/A404/68
National Highways Limited, (Company No. 9346363).
Registered Office: Bridge House, Walnut Tree Close, Guildford, Surrey, GU1 4LZ.
A company registered in England and Wales.
For enquiries, please contact the Customer
Contact Centre on 0300 123 5000 or


MFN0657339.pdf Download


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