06/03/2026
M27 Junction 5 to 7 Overlay Scheme – Technology Works
As part of our ongoing technology testing, we need to close sections of the M27 overnight in order to gain access to the entire carriageway. We’ll also take the opportunity to install gantry signs, remove temporary signs, and undertake seeding in the verge.
We understand that full carriageway closures can increase journey times, as well as cause disruption along diversion routes, however, we’re unable to complete this testing without accessing all four lanes at the same time. I apologise in advance for any frustration caused by our ongoing work.
Please see the below table of closures, taking place overnight, between 9pm and 6am:
Closure Date(s)
M27 junction 4 eastbound to M27 junction 7 16 March 2026
M27 junction 4 eastbound to M27 junction 8 17/18 March 2026
M27 junction 9 westbound to junction 4 24 March 2026
Please note that all dates and times are subject to change due to operational requirements or adverse weather.
As discussed in our previous update, most of our remaining work will take place remotely, away from the M27, so road users traveling during the daytime are unlikely to see a significant presence on site during this period.
Designated diversion routes will be in place during this time. You can find more information at the end of this e-Bulletin. All dates are subject to change due to operational requirements or adverse weather.
Get in touch
If you have any questions about the overlay scheme, you can call the National Highways Customer Contact Centre on 0300 123 5000, or email [email protected].
You can keep up to date on road closures by visiting our webpage at www.nationalhighways.co.uk/M27Concrete.