The load is due to be escorted by Wiltshire Police from 10.30am from Popham Airfield, in Hampshire, along the A303 (westbound), the A36, the A350, and then Imber Road and into DSG, Imber Avenue, in Warminster.
It is due to reach its destination by 1.30pm.
It is two large military low-loaders laden with military equipment on a trailer pulled by a suitable tractor unit.
The first measures 4.4m wide, 4.5m high and weighs 115T.
The second is 4.1m wide, 4.1m high and weighs 77T.
It will be a large, slow-moving load, so we are asking drivers to be aware and find alternative routes where possible.
Wherever possible, disruption will be kept to a minimum although both hauliers and motorists are asked to please be patient should they come across this load. Anyone travelling over this period on time critical matters should allow sufficient additional time.
Regular updates and travel information in respect of this abnormal load will be passed from the Control Room at Devizes where appropriate to help motorists plan their journey.
Police escorting resources are being provided by volunteer officers, paid for by the haulier at no cost to the public.