Motorists travelling on the M27 in Hampshire faced significant delays Monday morning after a reported collision involving an overturned vehicle on the eastbound carriageway near Portchester.

The incident was reported between Junction 11 and Junction 12, where emergency services attended the scene and traffic was temporarily stopped while crews dealt with the overturned vehicle.

M27 Accident Near Portchester

Early traffic reports indicated that eastbound traffic was being held at approximately 8:15 a.m. as emergency crews worked to make the motorway safe.

Initial reports suggested delays of around 45 minutes, with congestion extending several miles behind the incident. By approximately 8:41 a.m., traffic was reportedly being released after the vehicles involved were moved toward the hard shoulder.

Although the immediate obstruction was cleared, significant residual congestion remained. Some motorists experienced journey times considerably longer than normal as traffic gradually returned to normal.

Injuries and Cause of Crash Not Confirmed

Limited information was initially available about exactly how the collision occurred. The number of vehicles involved, the circumstances that caused the vehicle to overturn and whether anyone was injured had not been independently confirmed by police or other official authorities in the reports available.

There were no confirmed reports of fatalities associated with the incident, while details concerning possible serious injuries remained unavailable.

Drivers approaching the affected section were advised to exercise caution, follow directions from emergency services and traffic-management crews, and allow additional time for their journeys.

M27 Roadworks and Traffic Disruptions

The latest Portchester incident comes as other parts of the M27 in Hampshire are already subject to planned roadworks and restrictions.

National Highways has scheduled overnight closures and lane restrictions around Junctions 1 and 2 during September and October as part of improvement work on the Salisbury Road Bridge near Ower.

The planned works are separate from the reported Portchester collision. However, incidents on the M27 can quickly create extensive delays because of the motorway’s heavy traffic volumes.

Investigation and Traffic Recovery

Further information could be released if Hampshire Police, National Highways or other emergency services issue an official statement concerning the collision.

For now, motorists travelling eastbound through the Portchester area should remain alert to changing traffic conditions and allow extra time while any remaining congestion clears.

The circumstances surrounding the overturned vehicle and the full extent of any injuries remain subject to confirmation.