Wiltshire Police are warning motorists to be aware of abnormal loads that will be passing through the county this week.
At about 11am on Wednesday, three specialist load transporters carrying dump trucks will be escorted by Wiltshire Police from Whatley Quarry, Frome, to the Parkhouse roundabout off the A303.
The transporter will then continue its planned route on the A303 and A34 before later joining the M4 where it will re-enter the county.
The same transporters carrying similar loads will then make the same journey on Thursday, also starting at about 11am.
The transporters and their loads will measure 5.75 metres (18ft 10ins) wide, 4.98m (16ft 4ins) high with an overall length of 23m (76ft) and gross weight of 117 tonnes.
Routes that are likely to be affected by the transportation are the eastbound stretches of the A361, A36, A350 and A303.
The transporter will also be travelling on the A34 and M4 later in the afternoon.
Due to the size of the transporters, they will be slow moving and will have the potential to create congestion.
Wherever possible, disruption will be kept to a minimum but hauliers and motorists are asked to please be patient if they come across this load. Anyone travelling over this period should allow sufficient additional time.
Regular updates and travel information in respect of the abnormal loads will be provided by police from the control room at Devizes to help motorists plan their journey.
Police escorting resources are being provided by volunteer police officers on rest days, paid for by the haulier at no cost to the public.