Spring thaw restrictions · South Dakota

South Dakota Spring Thaw Weight Restrictions

SDDOT sets and lifts restrictions from accumulated freeze/thaw indices and field observation, and announces each change by press release and on this page.

Check South Dakota Truck Info — Spring Load Restrictions before you dispatch.

This page mirrors the state's publication with a timestamp; it is not the authority. Read 1 day(s) ago (2026-09-08). The document states no date of its own. Open the state's own page.

In force on 2026-09-09

Status unknown — check the state

We hold no confirmed restriction list for South Dakota right now. That is not the same as "no restrictions" — open the state's page below.

The source, and how we read it

HTML bulletin · Partly machine-readablePolled weekly (off season)
Publisher
South Dakota Department of Transportation
Authoritative page
https://sdtruckinfo.sd.gov/rules-regulations/size-weight-regulations/spring-load-restrictions/
Format
HTML bulletin — Partly machine-readable
What we do with it
Watched for change and linked. We do not synthesise a limit from a map or a PDF.
Posting season
02-15 to 04-30 — SDCL 32-22-24 authorises a highway maintaining authority to restrict loads at any time BETWEEN FEBRUARY 15 AND APRIL 30. This is the only state in the registry whose season is fixed by statute rather than by observation, so the window is the statute verbatim.
Polling cadence today
Outside South Dakota's posting window by 132 days — polled weekly, so an unscheduled restriction and a broken source are both found before the season opens.
If our copy goes stale
It errs toward showing a restriction the state has already lifted, because this source publishes only what is currently in force.

Other states

All states and what each one publishes · Oversize & overweight permit calculator