Upcoming overnight works and slip road closures October 2026

Please be advised that overnight work will be taking place soon at M27 Junctions 10 and 11.

Lane 1 of the motorway is currently closed eastbound and westbound as part of the existing traffic management arrangements, and these will remain closed throughout the upcoming work. During the overnight work, lanes 2 and 3 will also be closed eastbound and westbound with only lane 4 (nearest the central reservation) remaining open to traffic.

Each morning, lanes 2 and 3 will reopen and traffic will return to the current daytime arrangement, with Lane 1 remaining closed.

See below for the exact dates, duration and traffic management.

Overnight on 1 October and nightly from 5 October to 10 October 2026 (9pm to 6am the following morning)*.

• Westbound off-slip closure and westbound lane closures.
• Permitted working hours: 9pm to 6am.
• M27 J10 westbound off-slip road closure heading (towards Whiteley and Southampton).
• View the diversion route.

• Eastbound on-slip closure and eastbound lane closures.
• Permitted working hours: 9pm to 6am.
• M27 J10 eastbound entry slip road closure heading towards (Fareham and Portsmouth).
• View the diversion route.
• Contingency overnight closures may be required between 10 and 12 October 2026. Signed diversion routes will be in place if these closures are needed.

*Contingency overnight closures may be required between 10 and 12 October 2026. Signed diversion routes will be in place if these are needed.

Overnight closure on 1 October

• M27 Junction 11 westbound on-slip closure
• Working hours: 9pm to 6am
• The M27 Junction 11 westbound on-slip road will be closed for traffic joining the motorway towards Southampton.
• View the diversion route.

Motorists are advised to plan their journeys accordingly and allow extra time. Some of the work planned is weather dependent and may need to be re-arranged at short notice in the event of adverse weather.

Water Lane & Testwood Lane

Please be aware of upcoming roadworks as SGN carries out essential gas main replacement works in two phases:

Phase 1:

Water Lane – Starting 3rd August

Phase 2:

Testwood Lane – DELAYED now starting Monday 12th October for 8 weeks

Temporary traffic lights and road closures will be in place throughout the works.

Bus services will be affected, so please check with bus operators for the latest route information.

Hill Street from Monday 10^th August

Works are expected to take place for a duration of 6 weeks, until Friday 18^th September for electrical utility works.

Hill Street: Road Closure – Monday 10th August – Friday 21^st August

Salisbury Road: Temporary Traffic Signals – Wednesday 19^th August until Friday 18^th September 2026.