The maximum legal vehicle dimensions, loaded or unloaded, that may be operated on Utah highways without special permits:
Height: 14’ measured from level road surface to top of load vehicle
Width: 8’ 6” with or without load. Measured from outside to outside of widest extremities, excluding appurtenant devices.
Length: Semi-Trailer 53’, Double trailer combinations 61’. More lengths in Table 1 of PDF
Oversize and overweight vehicles and loads must obtain a permit before operating within the State of Utah.