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WITTENBURG TRUCK LINE INC
Readlyn, IA
CarrierChk vetting signal
No flags raised
Authority, insurance, safety rating and crash records checked
FMCSA status: Active & Authorized · DOT 1931 · MC 146051
Satisfactory
Active 20 yrs, 7 mo
Broker Vetting Summary
Key signals from current FMCSA records
Authority
Active
MC-146051 · Common carrier
Insurance
On File
Midwest Family Mutual Insurance Company
Safety
Satisfactory
0.0% OOS · 9 inspections on record
✓ No risk flags found on authority or insurance records
Vetting notes
- Operating authority active for 20 yrs, 7 mo
- Insurance on file: $750,000
- FMCSA safety rating: Satisfactory
- 9 FMCSA inspections on record
Authority & Compliance
Authority, insurance and required filings
Operating Authority
MC146051
Common Carrier, Contract Carrier
Insurance on File
MIDWEST FAMILY MUTUAL INSURANCE COMPANY
BI&PD · $750,000 · Policy CPIA0560126972
Required Filings
Liability (BIPD)
$750,000
Surety bond / trust fund · required
Not on file
Company Information
Registration, contact and cargo details
FMCSA Registration
DOT Number
1931
MC Number
MC-146051
Safety Rating
Satisfactory
Entity Type
Corporation
Operation Classification
Authorized for hire
MCS-150 Filed
November 10, 2025
FMCSA Registration
June 1, 1974
Authority Reinstated
February 3, 2006
Annual Mileage
565,339 mi (2024)
Contact Information
Address
117 Malone Avenue, Readlyn, IA 50668
Phone
Email
Owner / Officer
Barry Wittenburg
Officer 2
Rodney Wittenburg
Cargo Types
General FreightMetal/Sheet SteelBuilding MaterialsMachinery/Large ObjectsGrain/FeedDry BulkPaper ProductsConstruction MaterialsOther Cargo
Safety Snapshot
Out-of-service rates, violations and crashes
Safety & Inspection Summary
Total Inspections
9
Driver Inspections
7
Vehicle Inspections
2
Out-of-Service Violations
1
Violations by Category
Vehicle Maintenance7
Unsafe Driving6
Hours of Service2
OOS Rates vs. National Average
Driver OOS Rate0.0% · national avg 5.5%
✓ Below national average
0.0% of 6 inspections in the last 24 months put a driver or vehicle out of service —
0th percentile among carriers with 5–9 inspections (lower is better).
CarrierChk calculation from FMCSA roadside inspection records, not an FMCSA score.
Inspection Trend by Year
2025
2024
Violation Rate by Category
Share of roadside inspections in FMCSA's rolling 24-month window that found a violation in each category. The individual violations are listed under each inspection in Inspection Details below. None of this is the basis of the safety rating, which comes from an on-site compliance review.
Vehicle Maintenance
1 of 1 inspections
Unsafe Driving
5 of 7 inspections
Hours of Service
2 of 7 inspections
Driver Fitness
0 of 7 inspections
Controlled Substances
0 of 7 inspections
Crash History (3)
Crashes reported to FMCSA in the last 24 months. A crash appearing here is a reported event, not a finding of fault.
3
Crashes
0
Fatalities
1
Injuries
3
Tow-aways
| Date | State | Fatal | Injured | Tow | Conditions |
|---|---|---|---|---|---|
| April 29, 2026 | IA | — | — | Yes | No Adverse Conditions · Daylight · Dry |
| May 1, 2025 | IA | — | — | Yes | No Adverse Conditions · Daylight · Wet |
| April 1, 2025 | IA | — | 1 | Yes | No Adverse Conditions · Daylight · Dry |
Fleet & Operating Areas
Observed roadside activity and equipment
Where This Carrier Operates
States where this carrier's roadside inspections were recorded
FewerMore
IA9
Fleet & Equipment (11)
Vehicles identified in this carrier's inspection history. Year, make, model and equipment type are decoded from the VIN.
Power units
~5
of 12 reported to FMCSA
Trailers
~6
seen at inspection
Equipment types observed
Tractor
5
Grain / Hopper
3
Semi-trailer
2
Tank
1
Units on record
| Vehicle | Type | VIN | Inspections | With OOS |
|---|---|---|---|---|
| Frht | Tractor | 3ALXGS00XHDJF6393 | 3 | — |
| Pola | Semi-trailer | 1PMS14325J1050071 | 2 | — |
| Pola | Semi-trailer | 1PMS14327J1050072 | 2 | — |
| Frht | Tractor | 3ALXGS006JDJR2608 | 2 | — |
| 2007 Freightliner FLD132 | Tractor · Class 8 | 1FUJAPCK47DY99044 | 1 | — |
| 2007 Freightliner FLD132 | Tractor · Class 8 | 1FUJAPCK67DY68782 | 1 | — |
| 1996 Freightliner USF-1E | Tractor · Class 8 | 1FUYDZYB7TH781986 | 1 | 1 |
| 2010 Polar Tank Trailer | Tank · 42 ft | 1PMS14226A1036276 | 1 | — |
| 2021 Timpte, Inc Timpte | Grain / Hopper · 40 ft | 1TDH40024MB168209 | 1 | — |
| 2022 Timpte, Inc Timpte | Grain / Hopper · 40 ft | 1TDH40024NB174691 | 1 | 1 |
Show all 11 units
| Vehicle | Type | VIN | Inspections | With OOS |
|---|---|---|---|---|
| 2012 Timpte, Inc Timpte | Grain / Hopper · 40 ft | 1TDH40026CB134965 | 1 | — |
A vehicle appearing here was recorded in an inspection — it is not proof the carrier still operates it today.
Inspection Details
Each roadside inspection with its violations
Inspection Records (9)
| Date | Report # | Location | Level | Viol | OOS | Shipper | Unit Type | Make | VIN | License |
|---|---|---|---|---|---|---|---|---|---|---|
| December 5, 2025 | 000P13V93M | HWY, IA | III | 2 | — | EAST DBQ NIROGEN FERTILIZERS | Truck Tractor Semi-trailer |
FREIGHTLINER POLAR TANK TRAILER |
1FUJAPCK67DY68782 1PMS14226A1036276 |
IA FA0267 IA FVOR84 |
| 392.2-SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Speeding 2 | ||||||||
| 395.24C2II-ELDTN | HOS (ELD) - Driver failing to manually input or verify CMV trailer number. | Other Log/Form & Manner | ||||||||
| November 4, 2025 | 000P16DLSP | WB HWY 20, MASONVILLE, IA | III | 1 | — | MOSAIC | Truck Tractor Semi-trailer |
FREIGHTLINER TIMPTE, INC |
1FUJAPCK47DY99044 1TDH40026CB134965 |
IA DA1027 IA FV0383 |
| 392.2-SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Speeding 2 | ||||||||
| September 17, 2025 | 000P16DLNZ | WB HWY 20, INDEPENDENCE, IA | III | 2 | — | TESSENDERLO | Truck Tractor Semi-trailer |
FRHT POLA |
3ALXGS006JDJR2608 1PMS14325J1050071 |
IA DZ6329 IA DZ2881 |
| 392.2-SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Speeding 2 | ||||||||
| 395.24C2III | Driver failed to manually add shipping document number | Other Log/Form & Manner | ||||||||
| January 3, 2025 | 000P11H5ZL | HWY 3 AND IVY, IA | III | 2 | — | — | Truck Tractor Semi-trailer |
FRHT POLA |
3ALXGS00XHDJF6393 1PMS14327J1050072 |
IA DX1144 IA DZ2882 |
| 396.17C | Operating a CMV without proof of a periodic inspection | Inspection Reports | ||||||||
| 392.2-SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Speeding 2 | ||||||||
| December 3, 2024 | 000P14WDJM | BALSAM AVE SB/S OF HWY 18, IA | III | — | — | MACRO SOURCE | Truck Tractor Semi-trailer |
FRHT POLA |
3ALXGS00XHDJF6393 1PMS14327J1050072 |
IA DX1144 IA DZ2882 |
| October 22, 2024 | 000P10WRFD | HWY 20, IA | III | 1 | — | WINFIELD UNITED CROP NUTIENTS | Truck Tractor Semi-trailer |
FRHT TIMPTE, INC |
3ALXGS00XHDJF6393 1TDH40024MB168209 |
IA DX1144 IA FJ0288 |
| 392.2-SLLS3 | State/Local Laws - Speeding 11-14 miles per hour over the speed limit | Speeding 3 | ||||||||
| September 9, 2024 | 000P15NCXQ | 15 - I380 NB MM 51 BRANDON, IA | II | 3 | — | IOWA FERTILIZER COMPANY | Truck Tractor Semi-trailer |
FRHT POLA |
3ALXGS006JDJR2608 1PMS14325J1050071 |
IA DZ6329 IA DZ2881 |
| 393.9TS | Inoperative turn signal | Lighting | ||||||||
| 393.45D | Brake connections with leaks or constrictions | Brakes All Others | ||||||||
| 393.45B2 | Brake hose or tubing chafing and/or kinking | Brakes All Others | ||||||||
| August 27, 2024 | 000P12DZD5 | 16 - I380 SB MM 53 BRANDON, IA | II | 3 | 1 | — | Truck Tractor Semi-trailer |
FREIGHTLINER TIMPTE, INC |
1FUYDZYB7TH781986 1TDH40024NB174691 |
IA FP9636 IA FR6476 |
| 393.75A3-TAOL | OOSTires - All others, leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | Tires | ||||||||
| 393.45B2 | Brake hose or tubing chafing and/or kinking | Brakes All Others | ||||||||
| 393.9 | Inoperable Required Lamp | Clearance Identification Lamps/Other | ||||||||
| April 9, 2024 | 000P141GV5 | EB 410TH AND I35, IA | III | 1 | — | WITTENBURG | Truck Tractor Semi-trailer |
FRHT POLA |
3ALXGS00XHDJF6393 1PMS14327J1050072 |
IA DX1144 IA DZ2882 |
| 392.2-SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Speeding 2 | ||||||||
Shippers Seen at Inspections
Shipper names recorded by roadside inspectors over roughly the last three years. Only inspected loads appear, so this is a sample of who the carrier hauls for, not a complete customer list. Names are as entered at the roadside; blanks and placeholders such as “N/A” or “same as carrier” are left out.
| Shipper | Inspections | Most recent |
|---|---|---|
| EAST DBQ NIROGEN FERTILIZERS | 1 | December 5, 2025 |
| MOSAIC | 1 | November 4, 2025 |
| TESSENDERLO | 1 | September 17, 2025 |
| MACRO SOURCE | 1 | December 3, 2024 |
| WINFIELD UNITED CROP NUTIENTS | 1 | October 22, 2024 |
| IOWA FERTILIZER COMPANY | 1 | September 9, 2024 |
History & Filings
Authority, insurance and process-agent records
Authority History
| Date | Status | Type |
|---|---|---|
| February 3, 2006 | REINSTATED | Common Carrier |
| January 23, 2006 | GRANTED | Common Carrier |
| January 23, 2006 | GRANTED | Common Carrier |
| January 23, 2006 | GRANTED | Common Carrier |
| January 23, 2006 | GRANTED | Common Carrier |
| January 23, 2006 | GRANTED | Common Carrier |
| January 23, 2006 | GRANTED | Contract Carrier |
| January 23, 2006 | GRANTED | Common Carrier |
| September 1, 1996 | DISMISSED | Property Broker |
Insurance & Revocation Filings
| Date | Type | Status |
|---|---|---|
| December 1, 2020 | BI&PD Primary/Excess | On file |
| December 20, 2005 | CONTRACT | On Record |
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Data sourced from FMCSA MCMIS via Socrata. Record last updated: September 27, 2026.
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