Thermopolis, Wyoming regulations require all heavy haul operations to comply with the Wyoming Department of Transportation (WYDOT) guidelines as well as local ordinances administered by the Thermopolis Department of Transportation (THEDOT).

Heavy haul permits are required for any load exceeding 13 feet in width, 15 feet 6 inches in height, or 178,592 lbs in gross vehicle weight. These dimensions are strictly enforced throughout Thermopolis, particularly in high-traffic areas.

Special consideration must be given to route planning to avoid Thermopolis Industrial Park and the vicinity of Thermopolis International Airport, which have infrastructure limitations or heavy pedestrian traffic that may impede oversized loads.

Wyoming law mandates escort vehicles for any load exceeding 15 feet in width or 13 feet 6 inches in height. When traveling through Thermopolis, these requirements may be more stringent depending on the specific streets and neighborhoods traversed.

The Thermopolis Department of Transportation requires a minimum of 64 hours advance notice to coordinate police escorts, which are mandatory for super-loads or when traveling through congested areas of Thermopolis.

The Wyoming Department of Transportation manages the primary application process for oversize permits, with supplementary permits required from Thermopolis Department of Transportation for transit through Thermopolis limits.

Required documentation for Thermopolis permits includes axle configuration diagrams, proof of insurance with appropriate coverage levels, and detailed transport plans. Engineering assessments may be required for loads exceeding standard weight thresholds on certain streets and bridges.

Thermopolis has strict time-of-day restrictions for oversize loads, generally prohibiting movements during peak hours (7-8 am and 4-5 pm, Monday-Friday).

Seasonal restrictions apply during major events like the the Thermopolis Annual Convention and the the Thermopolis Fall Celebration, which may impact routing and scheduling.

Certain neighborhoods, such as Thermopolis Center and areas around Downtown Thermopolis, have restricted access for oversize loads. Alternative routes should be planned in advance to avoid these areas.

The base permit fee for an oversize load in Wyoming is $40, with additional fees for super heavy loads (over 200,000 lbs) ranging from $150 to $350 depending on the complexity of the move.

For movements within Thermopolis, Thermopolis Department of Transportation may charge additional fees for city-specific permits, which can range from $75 to $500 or more for particularly complex routes or those requiring extensive coordination with city agencies.