It comes as a trailer landed on its side in an incident at 6.34am this morning.
Hampshire police said the A272 at Langrish was shut between the A3 at Petersfield and A32 at West Meon Hut.
Roads policing officers tweeted: ‘Please avoid the area, particularly HGVs.
‘Recovery of a tractor and trailer and a significant spillage of diesel and milk to clean up.
‘Expect disruption but thanks for your patience.’
As of 11.41am the road closure was still in place.
There are no reported injuries and the vehicle towing the trailer is still upright.