South Dakota oversize load permits
South Dakota allows 14'0" unpermitted, which 20 states do. The other 26 cap at 13'6" — so a 14-foot load legal here needs a permit the moment it crosses into most of them.
South Dakota permit requirements
The same seven sections for every state, so two states can be compared without re-learning the layout.
Permit required above
Exceed any one of these in South Dakota and the load needs a permit. No overall cap on a tractor plus a 53' semitrailer, and no KPRA rule. A trailer longer than 53' re-activates the state's 85' overall cap. Permigo files it for a flat $20, with the state's own fee billed at cost.
Front and rear overhang are capped separately, not combined. Exceed either and South Dakota requires a permit.
Filed from Houston, TX. A permit agent answers +1 (786) 494-6912, 7am–7pm CT, 7 days; no card needed for a quote.
Axle limits
Escorts by road type
Police escort at the state’s discretion.
Superload above
No separate superload class published — the permit thresholds above govern.
Movement windows
| Situation | Window |
|---|---|
| Weekends & holidays | Unrestricted — 'South Dakota does not have weekend or holiday restrictions.' |
| Daylight-only (½hr before sunrise → ½hr after sunset) if any of the nine triggers | escort required · can't keep posted speed · >10' wide · >14'6" high · single unit >45' · combination >110' · 2-unit combo w/ unit >60' · 3+-unit combo w/ unit >48' · non-interstate travel beyond 2 mi of an interstate interchange |
| OS night travel | Effectively interstate-only (+2-mi interchange radius), and only ≤10'W / ≤14'6"H within length caps at posted speed; DOT variance beyond = roof ambers + front and rear escorts |
| Overweight-only, legal dims | Nights OK if unescorted; single-trip OW permits only on the interstate |
| LCV (approved routes, ≤110'/≤129k) | 24 hours/day; each permit one trip or 24 hr |
| Weather | OS permit void at visibility ≤½ mile; OS/OW void on slippery surfaces; troopers may restrict further |
| Spring load limits | Feb 15 – Apr 30 (extendable); DOT variance possible |
| Sturgis Rally (Black Hills counties) | Thu before the 1st Fri of Aug → Sun after the 2nd Fri: DOT Rapid City approval for escorted/slow/>110'/over-width loads; travel ½hr-before-sunrise → 10:00 AM only |
Travel restrictions
Other published tables
Extended Period permit
| Limit | Value |
|---|---|
| What it covers | A non-divisible oversize load — not overweight — on a single unit or a two-unit combination |
| Width | 14'6" maximum |
| Side overhang | 3'3" maximum |
| Front + rear overhang | 30' combined maximum |
| Single unit length | 60' including load overhang |
| Two-unit combination | 85' including load overhang |
Primary source: South Dakota Admin. Rule 70:03:01:20 — oversize permits ↗
Every figure on this page was checked against it on August 4, 2026.
Get South Dakota priced and filed
Send the route and a permit agent calls you back with South Dakota’s fee, any other state on the way, and one total. Filed from Houston, TX; we answer +1 (786) 494-6912, 7am–7pm CT, 7 days.
Already know the load? Start an order in FleetLynk, the filing app behind Permigo — or send the form and we set it up for you.
States that border South Dakota
Limits change at the line. One order covers every state on your route.
South Dakota oversize permits, answered
Do I need an oversize permit in South Dakota?
You need a permit in South Dakota once the load exceeds any one of these: 8'6" wide, 14'0" high, or 80,000 lb gross. There is no overall length cap on a normal tractor-semitrailer — the trailer itself is capped at 53' instead. Axle limits apply too — 20,000 lb on a single axle and 34,000 lb on a tandem.
When does South Dakota require an escort?
South Dakota requires no escort below 16' wide. Above that the requirement depends on the road type as well as the dimension, which is why the same load can need a front escort on a two-lane and a rear escort on a multilane.
Can I move an oversize load at night in South Dakota?
Daylight only above 10' wide. There is no general weekend blackout. There is no holiday blackout.
What counts as a superload in South Dakota?
South Dakota publishes no separate superload class — the permit thresholds above govern, and anything beyond them goes to engineering review.
How much does a South Dakota oversize permit cost?
Permigo charges a flat $20 service fee per state permit. South Dakota's own permit fee is billed at cost on the same invoice, itemised, with nothing added. Call +1 (786) 494-6912 and we will price your exact route.
What happens if I move without a South Dakota permit?
Moving above South Dakota's limits without a permit is a violation, not a paperwork gap. The load can be stopped at a scale or by a trooper and held until a permit is issued, the fine is set by South Dakota and the citing officer, and a pattern of violations follows the carrier's safety record. If you are not sure the load needs one, when you need an oversize permit walks through the triggers.
Which kind of South Dakota permit do I need?
Most moves take a single-trip permit: one load, one route, a set number of days. Many states also sell annual or blanket permits for loads that stay within routine dimensions; whether South Dakota does, and for which loads, is on the state's own permit page. A superload is permitted separately and reviewed by the state — the thresholds are in the answer above. Permigo files whichever kind the load needs at the same $20 flat fee; what South Dakota itself charges is on the cost guide.
Is a South Dakota oversize permit the same as a South Dakota truck permit?
No. A "truck permit" usually means the paperwork a truck needs to cross South Dakota at all — a trip permit, a fuel permit (IFTA) or IRP plates — which the state's motor-carrier office issues. An oversize or overweight permit covers one load that exceeds South Dakota's legal size or weight, and that is what Permigo files.
Also useful: when you need a permit, pilot car requirements by state, and the interactive map of all 48 states.
Moving through South Dakota?
$20 flat per state permit, the state's fee at cost. A permit agent answers, 7am–7pm CT.