The title explains it, coming in off the A31, 3.8m wide 4.8m high 
The only way in is along Blandford Road through Upton Village but check with the harbour board about access, how big is your abnormal load?
Thanks Wheelnut, thought that looked the best way in, its 3.8m wide, 4.8m high, gross 40 tonnes.
i don’t have it to hand or i’d write it out for you, but phone the abload man at dorset and he’ll give it you street by street - he did this for me before xmas as he didn’t agree with mine!
remember too; no running in the darkness in dorset, they have been clamping down bigtime recently