All oversize loads entering Harrold, South Dakota must conform to the requirements set by the South Dakota Department of Transportation (SDDOT) and the Harrold Department of Transportation (HARDOT).

In general, any vehicle over 12 feet in width, 15 feet 0 inches in height, and within the super heavy weight class (over 170,118 lbs) should obtain an oversize load permit from the SDDOT and potentially additional permits from HARDOT.

To navigate the complexities of Harrold's infrastructure, it's crucial to plan routes that avoid sensitive areas like Harrold Bridge and major construction zones along the Harrold Hills area.

South Dakota law mandates escort vehicles for any load exceeding 14 feet in width or 14 feet 6 inches in height. When traveling through Harrold, these requirements may be more stringent depending on the specific streets and neighborhoods traversed.

The Harrold Department of Transportation requires a minimum of 47 hours advance notice to coordinate police escorts, which are mandatory for super-loads or when traveling through congested areas of Harrold.

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

Required documentation for Harrold 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.

Harrold has strict time-of-day restrictions for oversize loads, generally prohibiting movements during peak hours (7-8 am and 3-5 pm, Monday-Friday).

Seasonal restrictions apply during major events like the the Harrold International Show and the the Harrold Food Tournament, which may impact routing and scheduling.

Certain neighborhoods, such as Downtown Harrold and areas around the Harrold Canal, 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 South 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 Harrold, Harrold 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.