Hampshire Police have arrested a 29-year-old man on suspicion of dangerous driving, driving with an unsecured load and causing danger to other roads users, following an accident on the A34.
It's understood that a car transporter which was being towed by a recovery vehicle on the northbound carriageway came free and crashed through the central reservation shedding its load in the process.
Hampshire Police say the transporter and vehicles have been cleared away but the road is likely to remain closed for several hours while repairs are done to the road surface.
A report from the A34 where a car transporter overturned leading to the closure of the road in both directions for several hours.
Part of the A34 in Hampshire will remain closed until early afternoon after a car transporter overturned and shed its load.