Keystone, South Dakota regulations require all heavy haul operations to comply with the South Dakota Department of Transportation (SDDOT) guidelines as well as local ordinances administered by the Keystone Department of Transportation (KEYDOT).

Heavy haul permits are required for any load exceeding 12 feet in width, 15 feet 0 inches in height, or 245,989 lbs in gross vehicle weight. These dimensions are strictly enforced throughout Keystone, particularly in high-traffic areas.

Special consideration must be given to route planning to avoid Keystone Research Park and the vicinity of Keystone Civic Center, which have infrastructure limitations or heavy pedestrian traffic that may impede oversized loads.

South Dakota law mandates escort vehicles for any load exceeding 16 feet in width or 15 feet 0 inches in height. When traveling through Keystone, these requirements may be more stringent depending on the specific streets and neighborhoods traversed.

The Keystone Department of Transportation requires a minimum of 39 hours advance notice to coordinate police escorts, which are mandatory for super-loads or when traveling through congested areas of Keystone.

To apply for an oversize load permit in South Dakota, companies must submit their applications through the South Dakota Department of Transportation's permit portal. Additional permits for Keystone may require submission to Keystone Department of Transportation.

Documentation required includes detailed route plans, load dimensions, and weight certificates. For super heavy loads, a detailed engineering analysis may be necessary to ensure that the load can be safely transported without damaging city infrastructure.

Keystone has strict time-of-day restrictions for oversize loads, generally prohibiting movements during peak hours (7-9 am and 4-6 pm, Monday-Friday).

Seasonal restrictions apply during major events like the the Keystone Spring Celebration and the the Keystone Cultural Show, which may impact routing and scheduling.

Certain neighborhoods, such as Keystone Center and areas around the Keystone Financial Center, 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 Keystone, Keystone 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.