Transporters operating oversize loads in Mandan, North Dakota must adhere to regulations enforced by both the North Dakota Department of Transportation (NDDOT) and the Mandan Department of Transportation (MANDOT).

Permits are mandatory for vehicles exceeding standard dimensions of 11 feet in width, 15 feet 0 inches in height, or those weighing more than 154,685 lbs. Additional local permits may be required for specific routes within the city limits.

Due to Mandan's unique infrastructure constraints, carriers must exercise caution when navigating near the Mandan River and should plan alternate routes around Mandan Civic Center during peak hours.

Escort vehicles are required for oversize loads exceeding 17 feet in width or 13 feet 6 inches in height on highways and certain city streets. The North Dakota State Police often require escorts for loads that are particularly large or heavy.

For movements within Mandan, the Mandan Department of Transportation may mandate police escorts for oversize loads, especially during peak traffic hours. Scheduling these escorts requires advance notice, typically at least 64 hours prior to the move.

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

Required documentation for Mandan 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.

Mandan 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 Mandan Arts Tournament and the the Mandan Historical Exhibition, which may impact routing and scheduling.

Certain neighborhoods, such as Mandan Center and areas around Mandan Industrial Park, 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 North Dakota 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 Mandan, Mandan 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.