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

In general, any vehicle over 13 feet in width, 15 feet 0 inches in height, and within the super heavy weight class (over 264,796 lbs) should obtain an oversize load permit from the SDDOT and potentially additional permits from GREDOT.

To navigate the complexities of Grenville's infrastructure, it's crucial to plan routes that avoid sensitive areas like Grenville Basin and major construction zones along the Grenville Research Park area.

Escort vehicles are required for oversize loads exceeding 14 feet in width or 14 feet 0 inches in height on highways and certain city streets. The South Dakota State Police often require escorts for loads that are particularly large or heavy.

For movements within Grenville, the Grenville Department of Transportation may mandate police escorts for oversize loads, especially during peak traffic hours. Scheduling these escorts requires advance notice, typically at least 70 hours prior to the move.

Permit applications in Grenville must be submitted through the SDDOT's online permitting system. Carriers should be prepared to provide comprehensive vehicle specifications, proposed routes, and transport schedules.

Applications must include certified weight tickets, dimensional diagrams, and route surveys. For loads that may impact traffic flow in Grenville, a traffic management plan may also be required as part of the application process.

Grenville has strict time-of-day restrictions for oversize loads, generally prohibiting movements during peak hours (7-8 am and 4-6 pm, Monday-Friday).

Seasonal restrictions apply during major events like the the Grenville Music Marathon and the the Grenville Winter Tournament, which may impact routing and scheduling.

Certain neighborhoods, such as Grenville Center and areas around Downtown Grenville, 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 Grenville, Grenville 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.