The A35 Dorchester Road is closed in both directions due to a serious accident near Askerswell.
A car and caravan have overturned. Police advise drivers to avoid the area.
More top news
A Bowhead whale - almost never seen south of the Arctic - was spotted by a diver just off Par Beach on St Martin's island.
Monkey World in Dorset has welcomed a second baby Sumatran orang-utan to the park.
The mother of a Muscular Dystrophy patient says he could have lived longer if he had been given access to vital medical equipment sooner.