Road users in the Westbury, Trowbridge, Melksham and Chippenham areas of Wiltshire may experience delays on Friday 3 May.
An abnormal load is due to leave J17 of the M4 (Chippenham) at 11 am and travel via the A350 through Chippenham, Melksham and Trowbridge before heading onto the B3097 in the area of Yarnbrook to its final destination in Brook Lane, Westbury.
The load is a steel fabricated structure, 4.6m in width and will be escorted by police and private vehicles.
Due to its size, the load will be both slow moving and have the potential to cause congestion in places where oncoming traffic will be required to pull in and wait for the packet to pass. Traffic travelling behind the move will not be able to overtake.
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 for their journey.
Police escorting resources are being provided by officers, paid for by the haulier at no cost to the public.