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South Dakota Oversize Permits Phone Number: 630-222-5770
South Dakota Oversize Permits Validity: These permits are valid for Three-days. Before entering with a heavy haul, it is necessary to secure permits.
South Dakota Operating Time: Loads can move from half an hour before sunrise to half an hour after sunset on weekends (Saturday and Sunday). Loads up to 10 feet wide, 14 feet 6 inches high, and 110 feet long can travel on interstate roads and within a 2-mile radius of state highway interchanges. Loads that are just overweight, on the other hand, can move at any time of day or night.
South Dakota Seasonal Travel Restriction: Spring Thaw Weight Restrictions: Spring thaw weight limitations may be imposed from February 15. Always check the permit office for updates.
South Dakota Legal Length: 53 feet for semi-trailer & overall length is not set.
South Dakota legal Overhang rule: 3 feet for front and 4 feet for rear on 53 feet trailer and load.
Exceptions for Specific Loads: Poles, pipes, beams, utility poles, and similar structures are exempt from length and rear overhang requirements.
South Dakota Maximum Wide Load Without Permit: 8 feet 6 inches
South Dakota Legal Height: 14 feet
South Dakota Legal Weight Limit: Gross weight 80,000lbs
Steer Axle, The weight on the steering axle should not exceed 600 pounds per inch of tire width.
Single Axle 20,000lbs
Tandem Axles 34,000lbs
Tridem Axles 42,000lbs
Divisible loads over 80,000 pounds: Divisible loads weighing more than 80,000 pounds may drive on state roadways without a permit, as long as the weight on each axle/group meets regulatory requirements. For interstate roads, a “Interstate Permit” is necessary.
South Dakota maximum Length with permit: Not set, it relies on routes
South Dakota wide load with permit: Not set, it relies on routes
South Dakota Maximum Height allowed with permit: Not set, it relies on routes
South Dakota Weight Limit:
Steer Axle, the weight on the steering axle should not exceed 600 pounds per inch of tire width.
Single Axle 24,000lbs.
Tandem Axles 46,000lbs
Tridem Axles 60,000lbs
Quad Axles 68,000lbs
Registration Requirements for Weight: Ensure that your vehicle is registered for the least weight it may transport. If the weight exceeds the registration limit, you may have to pay an extra price for a travel permit. The SD (South Dakota) department will plan the route for oversize loads. When enabling larger weights, all axles must stay on the ground. The vehicle must be registered to transport the weight, or additional fees will apply for permit-based travel.
Escort required for Length in South Dakota: More than 130 feet required 1 escort/pilot car
Escort Required for Width in South Dakota: More than 16 feet 1 required escort/pilot car on interstate routes
More than 20 feet required 1 escort/pilot car on state routes
Important: Multiple escorts are necessary if the load extends beyond 2 feet into adjacent lanes or if traffic cannot pass the permitted vehicle without being obstructed or driving on the shoulder. Except for US16 from Rapid City to Keystone, WY and US 18, loads larger than 10 feet require one escort in the Black Hills.
Escort Required for Height in South Dakota: Note set, but usually not required
Signal, lights and flags requirements for oversize load In South Dakota:
Signs: “Oversize Load” or “Oversized Load” signs are needed on the front and rear of vehicles that are more than 12 feet wide or 95 feet long, or that operate at night.
– If the vehicle is operating at night, all signs must be retroreflective.
– When not in use, the signs should be covered or removed
Flags: All over-dimensional vehicles and loads must show flags on their corners, as defined by laws. -If the load is more than 8’6” wide or extends beyond the width of the vehicle, flags must be fastened to its corners. – Flags should be put on the vehicle’s front bumper, three feet ahead, and 4 feet behind the trailer for any load projection. – If the projection is more than 2 feet wide, two flags are necessary; projections less than 2 feet wide require only one flag.
Amber light: Loads carrying projections must be lit with amber or red lights and reflectors while moving at night.
The South Dakota permit page outlines specific illumination requirements for nighttime operation.
Removal of Blades and Buckets requirements in South Dakota: Farm tractors, forestry equipment, and road machinery do not require permits if the load is 12 feet wide, 13 feet 6 inches high, and weighs no more than 90,000 pounds. These vehicles may operate during daylight hours every day of the week.
To obtain South Dakota Single trip (IRP) OR Fuel (IFTA) and Annual Permits, the carrier must log into the state’s online permitting system, acknowledge the permit conditions, enter the vehicle and load information, select the travel dates, and provide the route details. South Dakota Oversize Permits phone number
(630) 222-5770 – Get your South Dakota DOT permits by calling us.
The cost of getting an Oversize permit in South Dakota depends on the type and period of the permit, however the estimated cost is:
The permit is required for vehicles that exceed the standard-length limit. It enables the transportation of longer goods, such as huge beams or pipes, while maintaining their safety and legality.
South Dakota Single trip permits are normally valid for one trip and is often necessary for trucks that do not have a regular IFTA (International fuel tax agreement) in place and IRP (International Registration Plan) registered. It enables the truck to drive through particular countries while remaining compliant with fuel tax requirements.
The permit is required when a load exceeds the rear or front of the vehicle. It guarantees that the overhanging weight is delivered securely, without endangering other road users.
South Dakota Single trip permits are normally valid for one trip and is often necessary for trucks that do not have a regular IFTA (International fuel tax agreement) in place and IRP (International Registration Plan) registered. It enables the truck to drive through particular countries while remaining compliant with fuel tax requirements.
South Dakota oversize permits information including legal dimensions, routine permit limits, and escort requirements, operating times and restricted travel.
The phone number for South Dakota oversize and overweight permits is (630) 222-5770
Length: 53 feet for semi-trailer & overall length is not set.
Overhang: 3 feet for front and 4 feet for rear on 53 feet trailer and load.
Exceptions for Specific Loads: Poles, pipes, beams, utility poles, and similar structures are exempt from length and rear overhang requirements.
Width: 8 feet 6 inches
Height: 14 feet
Weight: Gross weight 80,000lbs
Steer Axle, the weight on the steering axle should not exceed 600 pounds per inch of tire width.
Single Axle 20,000lbs
Tandem Axles 34,000lbs
Tridem Axles 42,000lbs
Divisible loads over 80,000 pounds: Divisible loads weighing more than 80,000 pounds may drive on state roadways without a permit, as long as the weight on each axle/group meets regulatory requirements. For interstate roads, a "Interstate Permit" is necessary.
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In South Dakota, the widest load you can haul without permit in South Dakota is 8 feet 6 inches.
Loads can move from half an hour before sunrise to half an hour after sunset on weekends (Saturday and Sunday). Loads up to 10 feet wide, 14 feet 6 inches high, and 110 feet long can travel on interstate roads and within a 2-mile radius of state highway interchanges. Loads that are just overweight, on the other hand, can move at any time of day or night.
You can reach the South Dakota Department of Transportation's (SDDOT) Oversize Permits office at (630) 222-5770
The cost of getting an oversize permit in South Dakota depends on the type and period of the permit, however the estimated cost is:
South Dakota Single-Trip Oversize/Overweight Permit Cost: $25 For non-divisible oversize or overweight loads.
South Dakota Annual Oversize/Overweight Permit Cost: $60 For loads exceeding 80,000lbs on Interstate Highways.
Overlength Semitrailer Permit Cost: $60 For semitrailers up to 60 feet long, with restrictions on length and overhang.
Permit to Move to Weigh Scale: $25 For moving a vehicle to a weigh scale for weight determination.
Permits can be obtained calling by us at (630) 222-5770 Oversize Permit Office.
