Preview Preview: 7,000 carriers of roughly 4.5 million registered — a deliberate mix of currently active carriers and ones deactivated within the past year. Coverage is expanding. Sourced from the FMCSA Motor Carrier Census. Data as of 2026-09-06.

Trucking carriers based in South Dakota

How South Dakota carriers fare at the roadside, measured against every other state, from federal inspection and crash records.

12.0%Put out of service of 2,356 inspections
2,356Roadside inspections rolling three-year window
1,050Crashes on file 4.9% involved a fatality
2,194Power units across 94 carriers on file

South Dakota ranks 34 of 45 rated states by out-of-service rate, worst first — 4% lower than the national figure.

The largest carriers we hold in South Dakota

CarrierPower units DriversInspections Out of service
HEYL TRUCK LINES INC 490490 13198.0%
AGTEGRA COOPERATIVE 398505 1648.5%
SWEETMAN CONST CO 14676 283.6%
JOURNEY GROUP COMPANIES 14198 1573.3%
JENSEN ROCK & SAND INC 9368 3815.8%
AMERICAN COLLOID COMPANY 6863 742.9%
RUDE TRANSPORTATION INC 6862 1036.8%
SOUKUP CONSTRUCTION INC 5324 2030.0%
MYRL & ROY'S PAVING INC 4531 50.0%
ISEMAN HOMES INC 4120 1050.0%
FIMCO INC 3916 4936.7%
HOWES OIL CO INC 3920 527.7%
VALLEY QUEEN CHEESE FACTORY INC 3968 214.8%
MAGUIRE IRON INC 3431 466.5%
A-OX WELDING SUPPLY COMPANY INC 3027 6315.9%
DEUEL COUNTY FARMERS UNION OIL COMPANY 2416 20.0%
THORSTENSON TRUCKING LLC 2120 8518.8%
OPPERMAN INC 1911 80.0%
DAN SCHROEDERMEIER TRUCKING INC 1818 468.7%
DIZCO INC 1837 270.0%

Compare with another state

The twelve highest out-of-service rates on file.

What these numbers are, and what they are not

These are rates, not totals. CarrierWatch holds a systematic sample of the federal carrier register rather than all of it, so a count of carriers here describes what we hold, not what South Dakota has. A rate — inspections that ended out of service, divided by inspections — is a property of the carriers measured and does not depend on how many of the state we sampled, which is why it is the figure on this page.

The rate is inspection-weighted, so a few large carriers with many inspections move it more than many small ones. It is a description of the vehicles and drivers actually stopped in this state.

An out-of-service order means an inspector found a condition serious enough to stop the vehicle or driver until it was fixed. A crash on a carrier's record is not a finding of fault. Ratings and inspections come from the Federal Motor Carrier Safety Administration.

Search every South Dakota carrier we hold · All states ranked