A broken down vehicle has added to rush hour traffic diverted from the A35.
A low loader has broke down at the Shell garage roundabout at Bere Regis - partially blocking the A31.
Currently, there is traffic queuing in both directions.
The A35 is still closed to eastbound traffic between Bloxworth and the B3075 Quarr Hill Junction in East Morden - with a diversion put in place.
Roadworks westbound on the A35 between Poole and the Bakers Arms Roundabout will also cause delays to traffic leaving Poole.