PART of the A3 is now back open after a vehicle carrying glass shed its load across a roundabout.
The southbound approach to the Ham Barn roundabout was closed due to the incident.
It happened at around 2.30pm.
Motorists are being warned to drive cautiously when approaching the area.
The government recently announced a plan to spend £1.2m on improving the roundabout, which is the only one between Portsmouth and London.