Drivers advised to plan ahead as "essential" bridge work continues in Portsmouth

Drivers are being advised to plan ahead for diversions on the M275

M275
Author: Freya TaylorPublished 30th May 2026

Drivers are being advised to plan ahead as "essential" bridge work continues this weekend around Portsmouth.

Improvements to several bridges along the M275 will be taking place, as part of planned investment into Portsmouth's road network.

This is the second weekend of works and will start on Friday 29th May at 10pm and run until Monday 1st June at 5am.

A Portsmouth City Council spokesperson said: “This work forms part of the ongoing investment in maintaining Portsmouth’s road network and is essential to keeping the M275 and its structures safe for future use. Carrying out this type of highly technical work requires specialist skills and careful planning.

"By diverting traffic in one direction at a time and scheduling the work at weekends, we are aiming to manage the impact as effectively as possible.”

The M275 is one of the city’s busiest strategic routes, supporting daily travel for residents, businesses and visitors.

Portsmouth City Council says Its upkeep requires specialist engineering expertise, delivered by trained professionals.

These works will see Northbound diversions in place:

  • Traffic leaving Portsmouth via the M275 will be directed via the Tipner Interchange roundabout to help manage traffic flow around the affected bridge.

Clearly signed diversion routes will be in place throughout to help keep traffic moving.

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