Independent Motor Carrier Record
RateMyDOT
Private Platform · Not a Government Service

Every US motor carrier’s public FMCSA record, sourced and dated, before you sign on.

USDOT66163
Census synced2026-08-13
Record of Filing

SIOUX STEEL COMPANY

MC 488257 · SIOUX FALLS, SD
ActiveInterstateAuthorized for hire
Worked here? Report your experienceClaim this carrier
The unique number FMCSA assigns to a company operating commercial vehicles in the United States.
66163
An MC or MX docket number identifies a federal operating-authority record. It is different from a USDOT number and may not exist for every carrier.
MC488257
Headquarters
SIOUX FALLS, SD 57101
Added to FMCSA file
Jun 1, 1974 · 52 yrs on file
The Motor Carrier Identification Report used to update fleet size, mileage, operation type, and other census information. last filed
Jun 18, 2025
Fleet as filed
9 power units · 10 drivers

Street address, phone numbers, and officer names appear in the public FMCSA file but are not published here. our privacy policy.

Carrier Health Score

86out of 100
RateMyDOT's 0–100 measure built from the public FMCSA record. It is not an FMCSA safety rating or government determination.

Provisional means the carrier’s federal file isn’t full yet, so the score is built on part of the record instead of all of it.: computed from Coverage is how much of the record we want on this carrier is actually on file today. for this carrier.

What this means ↗

Not enough score history yet to show a trend.

Fleet & Operations

9Power units
10Drivers
1.1:1Driver:unit ratio
52Years in records
6-20Fleet category
100,000 miAnnual mileage (2024)
11,111 miAvg miles / power unit
InterstateOperation type
Jun 18, 2025The date on the carrier's latest Motor Carrier Identification Report in the FMCSA census file.
currentMCS-150 filing status
CorporationBusiness type

Fleet and mileage figures are the carrier’s own MCS-150 self-report as of Jun 18, 2025, not an independent count.

Authority & Compliance

FMCSA permission associated with a carrier's interstate operating docket. Status can change between RateMyDOT synchronizations.Census synced 2026-08-13
DocketAuthority statusOperationHazmat
MC488257ActiveInterstateNot authorized
Docket
MC488257
Authority status
Active
Operation
Interstate
Hazmat
Not authorized

The Company Census File records one authority status per carrier. It does not break out common, contract, and broker authority separately. Verify current authority on FMCSA SAFER before relying on it.

Authority history

No changes to this carrier’s FMCSA record have been observed since we began tracking it. This timeline shows what has changed while we’ve been watching It is not a complete FMCSA history.

Driver reports

Layer 2: self-attested reports from confirmed accounts

No reports have published for this carrier yet. Reports publish in batches, 2-8 weeks after submission (longer for smaller carriers), and only once enough reports exist to protect who wrote them.

About SIOUX STEEL COMPANY

SIOUX STEEL COMPANY appears in the FMCSA public Company Census File under DOT number 66163 and docket MC488257. The record has been in that file since Jun 1, 1974, and the copy we last synced on 2026-08-13 lists the carrier as Active, operating interstate, based in SIOUX FALLS, SD.

Its most recent MCS-150 filing, dated Jun 18, 2025, reports 9 power units and 10 drivers, and 100,000 miles in 2024. Those are the carrier’s own figures, self-reported to FMCSA; its filing status is current.

RateMyDOT publishes a Carrier Health Score computed from this public record, never a discretionary or editorial judgment about any individual carrier, and never something a carrier can pay to change. How the record is weighed is proprietary. The Health Score is ours and is not an FMCSA safety rating. What the score is.

Street addresses, phone numbers, and officer names are present in the public FMCSA file but are deliberately not published on this page.

Frequently asked questions

Q.1Is SIOUX STEEL COMPANY a good company to work for?
We don’t answer that. We publish what the record says and what drivers report, and let you decide. The FMCSA Company Census, last synced 2026-08-13, lists this carrier as active. No driver reports have published for this carrier yet.
Q.2Is SIOUX STEEL COMPANY's operating authority active?
The census file we last synced on 2026-08-13 records the authority status as Active under docket MC488257. Authority status can change between syncs. verify on FMCSA SAFER before you rely on it.
Q.3How large is SIOUX STEEL COMPANY's fleet?
Its most recent MCS-150 filing, dated Jun 18, 2025, reports 9 power units and 10 drivers. That is the carrier’s own self-report, not an independent count, and its filing status is current.
Q.4Where is SIOUX STEEL COMPANY based?
The census file lists a physical location of SIOUX FALLS, SD 57101. We do not publish street addresses, phone numbers, or officer names, even though they appear in the public file. See our privacy policy.
Q.5What is SIOUX STEEL COMPANY's Health Score?
The published Health Score is 86 out of 100, marked provisional because it is computed from 55% of the full data set for this carrier. It is built from this carrier’s public FMCSA record and produced the same way for every carrier in the country, never a discretionary or editorial judgment about this one. How the record is weighed is proprietary. See what the score is.
Q.6Where does this data come from?
Layer 1, everything above the driver reports, is the FMCSA public Company Census File, last synced 2026-08-13. Layer 2 is self-attested reports submitted by confirmed-account drivers. We never mix the two, and we never restate a driver’s report as our own claim.

Nearby and similar carriers

View all carriers in SDView active carriers in SDView 6-20-unit carriers
Related searches
Search “SIOUX STEEL COMPANY”Look up DOT 66163Browse all carriers
Data sourced from FMCSA public records. Last synced 2026-08-13. MCS-150 filing status: current.View on FMCSA SAFER ↗
SIOUX STEEL COMPANY (DOT 66163): Driver Reviews, Pay & Safety Record | RateMyDOT