Carrierintel
M&

MS & SONS CORP

Carrierintel Safety Score: 71/100. 17 inspection violations in 12 months. Last inspected Sep 2026.

DOT 133751MC 143871ActiveMotor CarrierInterstateStarstone Specialty Insurance Company +2HUMBOLDT, IA

COMPANY

Authority since
1985-07-08
MCS-150
2026-04-03 · 2,427,838 mi (2024)
Fleet
40 units · 66 trailers · 42 drivers
Annual mileage (VMT)
2,425,578 mi (2025)

ADDRESS

Physical
1605 SASSY LANE
HUMBOLDT, IA 50548
Mailing
PO BOX 334
HUMBOLDT, IA 50548

CONTACT

Phone
5153323303
Email
teri@mssons.com

OFFICERS

Primary Officer
TERI DUNPHY
Title
SECRETARY

OPERATION & CARGO

Operation classification
Authorized For Hire
Specialty
Tanker / Bulk Liquids
Cargo types
7
General FreightLiquids / GasesGrain, Feed, HayCommodities Dry BulkPaper ProductsFarm SuppliesOther: FERTILIZER
Self-reported by the company on its latest MCS-150 filing (FMCSA census). Reflects what the carrier is authorized and equipped to haul, not actual recent loads. Specialty is our summary of the declared cargo mix.
AUTHORITY
572 mo
Active authority
INSURANCE
3 active
Starstone Specialty Insurance Company
RISK GRADE
Minimal Risk
0 risk factors · 5 strengths
OOS RATE
4.8%
3 / 62 inspections

Carrierintel Safety Score

Rolling 12-month heuristic based on inspections, OOS, violations, crashes & fatalities. Not the official FMCSA SMS score.

71
out of 100
Good
Markers: OOS inspection Crash Fatality

Fleet vs Reality

last 12 months · power-unit VINs from roadside inspections
Declared (MCS-150)
40 power units
Unique power units seen
14
+ 13 trailer VINs
Inspections
16
Discrepancy
0.3x

Minimal Risk

0 risk factors · 5 strengths · 6 data points

SAFETY PERFORMANCE

Crash Record
31 crashes · 1 fatal · 15 with injuries · 31 tow-away
Clean Inspection Rate
95% — 59 clean of 62 inspections
Out-of-Service Rate
4.8% — driver OOS 1 insp., vehicle OOS 2 insp.

COMPLIANCE & AUTHORITY

USDOT Registration
Status: Active
Operating Authority
Active: Motor Carrier
Out-of-service orders
None on record
Authority Events
10 historical event(s) on file
MCS-150 Filing
Last filed 2026-04-03

INSURANCE

Active Coverage
3 policy(ies) on file · total max coverage $5,000,000

SUMMARY

Low OOS rate 6% (last 24 mo)
Low crash rate (2.5 per 100 trucks/yr)
95% clean inspections
Active insurance on file
Coverage $5.0M

INDUSTRY REPORTS

  • ELD Tampering — Carriers cited for ELD tampering under 49 CFR § 395.8(e), by carrier and state.
  • Top Violations — The ten most-cited FMCSA violation codes of the last 30 days.
  • Phantom Fleets — Declared power units against the vehicles seen at roadside inspections.
  • English Proficiency — Carriers whose drivers were cited under 49 CFR § 391.11(b)(2), by carrier and state.
  • Methodology — Where the data comes from and how the Safety Score and Risk Grade are built.

Other motor carriers in this city

More carriers in Iowa

All Iowa carriers →Browse every state →