National Highways will shortly be repairing the M3 London-bound carriageway between junctions 4 – 3. Significant deterioration of the carriageway was identified following inspections earlier in the year, leading us to close lane one between junctions 4 and 3 to protect road users. They have since been working to understand the cause and extent of the damage, so they can plan appropriate repairs.
They will start extensive repairs on Wednesday 3 January 2024, and expect to be finished in mid-February. Due to the extent of repairs and the depth of excavation needed, they have to fully close lane one and two on the London-bound carriageway between junctions 4 and 3, 24/7 for the duration of the work. This is so their workforce can carry out repairs safely, protecting both them and the travelling public. Lane three and four will remain open, with a 50mph speed limit in place.
As well as working during the day, they will be working overnight under a full closure of the London-bound carriageway between junctions 4a and 3, every night between 9pm and 6am.
Traffic management and closure information
Wednesday 3 January to Thursday 4 January
- Full overnight closure of the London-bound M3 between junctions 4a and 3, 9pm to 6am
Thursday 4 January - February 2024
- 24/7 closure of lane one and two on the London-bound carriageway between junction 4 and 3, with a 50mph speed limit on lanes 3 and 4
- Overnight (including weekends) full closures of the London-bound M3 between junctions 4a and 3, 9pm to 6am
There’ll be fully signed diversion routes in place during the full closure, details of which can be found on the National Highways website - nationalhighways.co.uk/se-maintenance just look for ‘M3 London-bound junction 4 – 3 carriageway repairs’.
National Highways are aware the repair work will cause disruption, and will be working days, nights and weekends to finish as quickly as possible. They have said they always aim to work to the programme, however unforeseen circumstances or adverse weather conditions may mean changes.
If you have any questions about this work, you can contact the National Highways Customer Contact Centre on 0300 123 5000, who will pass your query to the project team, or email: [email protected].
