Wyoming

PERMITS:
Driver must call ahead to the Port/Scale at least one hour prior to arrival and obtain a clearance number. Failure to do this will result in up to a $500 fine and 24-hour shutdown. The permit is usually valid for one day or one trip.

TRAVEL TIME:
Travel is allowed one-half hour before sunrise to one-half hour after sunset, including weekends. Loads not exceeding 10′ wide, and all other dimensions are legal, may travel at night on Interstate highways only with proper lighting.

RESTRICTED TRAVEL:
Holiday travel is usually allowed for loads not requiring escorts.

SEASONAL LOAD RESTRICTIONS: No specific annual restrictions, but they may be imposed as necessary during spring thaw.

LEGAL DIMENSIONS:
Width: 8’6″
Height: 14′
Length: 60′ semi-trailer and load including overhang
Weight: 80,000 – 117,000 Gross; Single – 20,000; Tandem – 36,000; Tridem – 42,000 (8’1″ to 8’5″ of spacing) 36,000 with 8′, 42,5000 pounds with greater than 8’6″ spacings; and 43,500 with greater than 10′ of spacings

Divisible Loads Exceeding 80,000: You can exceed 80,000 gross without a permit on state and Interstate highways as long as you are legal on all axle weights and bridge and you are licensed for at least the amount of your gross weight.

ROUTINE PERMIT LIMITS:
Width: 18′
Height: 17′
Length: 110′
Weight: Single – 25,000; Tandem – 55,000; Tridem – 65,000

Register for up to 117,000 pounds to permit for that much or more.
Loads in excess of these dimensions are considered as Superloads.

ESCORTS:
On Interstate Highways:
Length: At discretion of WY Highway Patrol
Overhang: 25′ or longer – 1 escort
Width: 14′ or wider– 1 escort
On 2-Lane Highways:
Length: Over 109′- 2 escorts
Width: 14′ wide or if load extends past center lane at any time – 2 escorts
Length: 110′ long or if load extends past center lane at any time – 2 escort
All Highways:
Height: As determined by WY Highway Patrol(not usually required)

SAFETY REQUIREMENTS:
All oversize loads/vehicles must display Oversize Load on both front and rear. Red flags, 12′ square, are required on all over width loads and when the rear overhang is 4′ or greater. Night running, if allowed, requires an amber clearance light on each front corner and red clearance light on each rear corner of the load and a revolving amber light, amber strobe, or a pair of 2-way flashing amber lights. These lights need to be visible from both front and rear.