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DEN-KER TRUCKING INC
DBA: Dennis Haerther Trucking
Atkins, IA
CarrierChk vetting signal
No flags raised
Authority, insurance, safety rating, crash records and out-of-service rates checked
FMCSA status: Active & Authorized · DOT 724786 · MC 782234
No Safety Rating
Active 4 yrs, 6 mo · first granted 2012
Broker Vetting Summary
Key signals from current FMCSA records
Authority
Active
MC-782234 · Common carrier
Insurance
On File
Auto Owners Insurance Company
Safety
Not Rated
14.3% OOS · 13 inspections on record
✓ No risk flags found on authority or insurance records
Vetting notes
- Operating authority active 4 yrs, 6 mo since reinstatement on April 11, 2022; first granted June 19, 2012 (14 yrs, 4 mo ago)
- Insurance on file: $750,000
- Driver out-of-service rate 25.0% — above the 5.5% national average
- Vehicle out-of-service rate 0.0% — below the 20.7% national average
- 13 FMCSA inspections on record
Authority & Compliance
Authority, insurance and required filings
Operating Authority
MC782234
Common Carrier
Insurance on File
AUTO OWNERS INSURANCE COMPANY
BI&PD · $750,000 · Policy 52-086113-00
Required Filings
Liability (BIPD)
$750,000
Company Information
Registration, contact and cargo details
FMCSA Registration
DOT Number
724786
MC Number
MC-782234
Safety Rating
Not Rated
Entity Type
Individual
Operation Classification
Authorized for hire
MCS-150 Filed
May 27, 2025
FMCSA Registration
January 14, 1998
Authority First Granted
June 19, 2012
Authority Reinstated
April 11, 2022
Annual Mileage
320,000 mi (2024)
Contact Information
Location
Atkins, IA
Email
Cargo Types
General FreightLiquids/GasesGrain/FeedDry BulkOther Cargo
Safety Snapshot
Out-of-service rates, violations and crashes
Safety & Inspection Summary
Total Inspections
13
Driver Inspections
10
Vehicle Inspections
3
Out-of-Service Violations
1
Violations by Category
Vehicle Maintenance2
Unsafe Driving4
Hours of Service2
OOS Rates vs. National Average
Driver OOS Rate25.0% · national avg 5.5%
⚠ Above national average (19.5pp higher)
Vehicle OOS Rate0.0% · national avg 20.7%
✓ Below national average
14.3% of 7 inspections in the last 24 months put a driver or vehicle out of service —
32nd 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
2026
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
2 of 3 inspections
Unsafe Driving
3 of 8 inspections
Hours of Service
0 of 8 inspections
Driver Fitness
1 of 8 inspections
Controlled Substances
0 of 8 inspections
Fleet & Operating Areas
Observed roadside activity and equipment
Where This Carrier Operates
States where this carrier's roadside inspections were recorded
FewerMore
IA7
IL1
MO1
WI1
Fleet & Equipment (15)
Vehicles identified in this carrier's inspection history. Year, make, model and equipment type are decoded from the VIN.
Power units
~6
of 7 reported to FMCSA
Trailers
~9
seen at inspection
Equipment types observed
Grain / Hopper
7
Tractor
5
Dry Van
2
Not Applicable
1
Units on record
| Vehicle | Type | VIN | Inspections | With OOS |
|---|---|---|---|---|
| 2018 Peterbilt 579 | Tractor · Class 8 | 1XPBD49X5JD451101 | 4 | — |
| 2023 Wilson | Grain / Hopper · 41 ft | 1W1K4412XP7726816 | 2 | — |
| 2011 Peterbilt 386 | Tractor · Class 8 | 1XPHD49X4BD128346 | 2 | 1 |
| 2023 Great Dane Trailers | Dry Van · 53 ft | 1GR1A0620PK456529 | 1 | — |
| 2027 Utility Trailer Manufacturer | Dry Van · 53 ft | 1UYVS2536V7693431 | 1 | — |
| 2026 Wilson | Grain / Hopper · 41 ft | 1W1K44120T7732859 | 1 | 1 |
| 2024 Wilson | Grain / Hopper · 41 ft | 1W1K44121R6634714 | 1 | — |
| 2025 Wilson | Grain / Hopper · 41 ft | 1W1K44123S6636101 | 1 | — |
| 2025 Wilson | Grain / Hopper · 41 ft | 1W1K44125S6636102 | 1 | — |
| 2023 Wilson | Grain / Hopper · 43 ft | 1W1K44327P7726883 | 1 | — |
Show all 15 units
| Vehicle | Type | VIN | Inspections | With OOS |
|---|---|---|---|---|
| 2025 Wilson | Grain / Hopper · 50 ft | 1W1K45032S7731081 | 1 | — |
| 2011 Peterbilt 386 | Tractor · Class 8 | 1XPHD49X9BD130223 | 1 | — |
| 2014 Peterbilt 386 | Tractor · Class 8 | 1XPHD49X9ED248583 | 1 | — |
| 2016 Peterbilt 389 | Not Applicable · Class 8 | 1XPXD49X4GD297186 | 1 | — |
| 2007 International L9427 | Tractor · Class 8 | 2HSCNAPR47C300546 | 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 (13)
| Date | Report # | Location | Level | Viol | OOS | Shipper | Unit Type | Make | VIN | License |
|---|---|---|---|---|---|---|---|---|---|---|
| September 29, 2026 | 5004620060 | I74, IL | III | — | — | BOMGAARS | Truck Tractor Semi-trailer |
PETERBILT UTIL |
1XPBD49X5JD451101 1UYVS2537K7714721 |
IA FX9679 IA GE6516 |
| August 7, 2026 | 2486003288 | HAZEL GREEN WI | II | 3 | — | LOGISTICS PARK DUBUQUE | Truck Tractor Semi-trailer |
PETERBILT WILSON |
1XPXD49X4GD297186 1W1K44327P7726883 |
IA FV9582 WI MNB434 |
| 392.2-SLLEWA1 | State/Local Laws - Excessive weight - 1-2500 lbs over on an axle/axle groups | |||||||||
| 392.2-SLLIFTA | State/Local Laws - State tax/International Fuel Tax (IFTA) violation | |||||||||
| 393.78A-WS | Washers - Inoperative washing system. | Windshield/ Glass/ Markings | ||||||||
| June 4, 2026 | W108001581 | KNOX CITY MO | III | 1 | — | ADM | Truck Tractor Semi-trailer |
PETERBILT UTILITY TRAILER MANUFACTURER |
1XPBD49X5JD451101 1UYVS2536V7693431 |
IA FX9679 IA MP7962 |
| 392.2-SLLIRP | State/Local Laws - IRP apportioned tag or registration violation | |||||||||
| April 13, 2026 | 000P12F0HW | EB HWY 30 / WACONIA ST, IA | III | 6 | 1 | ROB FRANK | Truck Tractor Semi-trailer |
PETERBILT WILSON |
1XPHD49X4BD128346 1W1K44120T7732859 |
IA DT2149 IA NRJ441 |
| 391.49J | OOSNo valid medical waiver in drivers possession | Medical Certificate | ||||||||
| 392.2-SLLEWG1 | State/Local Laws - Excessive weight - 1-2500 lbs over on allowable gross weight | |||||||||
| 392.2-SLLEWA1 | State/Local Laws - Excessive weight - 1-2500 lbs over on an axle/axle groups | |||||||||
| 392.2-SLLEWA1 | State/Local Laws - Excessive weight - 1-2500 lbs over on an axle/axle groups | |||||||||
| 392.2-SLLEWA1 | State/Local Laws - Excessive weight - 1-2500 lbs over on an axle/axle groups | |||||||||
| 390.21TB | Carrier name and/or USDOT Number not displayed as required | |||||||||
| May 12, 2025 | 000P13JB0J | HWY 100 4MM ON RAMP, IA | II | 2 | — | AGROLA | Truck Tractor Semi-trailer |
PETERBILT WILSON |
1XPBD49X5JD451101 1W1K4412XP7726816 |
IA FX9679 IA MNB359 |
| 392.2RG | State vehicle registration or License Plate violation | |||||||||
| 396.17C | Operating a CMV without proof of a periodic inspection | Inspection Reports | ||||||||
| April 29, 2025 | 5005350124 | 026 - CARLOCK - I-74 W/B, IL | II | — | — | — | Truck Tractor Semi-trailer |
PETERBILT GREAT DANE TRAILERS |
1XPBD49X5JD451101 1GR1A0620PK456529 |
IA FX9679 IA MVG657 |
| February 11, 2025 | 000P12DZQM | NB I380 / BOYSON RD, IA | III | 4 | — | — | Truck Tractor Semi-trailer |
PETERBILT WILSON |
1XPHD49X9BD130223 1W1K44123S6636101 |
IA EY7775 IA OQR288 |
| 392.2-SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Speeding 2 | ||||||||
| 392.2RG | State vehicle registration or License Plate violation | |||||||||
| 390.21TB | Carrier name and/or USDOT Number not displayed as required | |||||||||
| 392.2RG | State vehicle registration or License Plate violation | |||||||||
| December 16, 2024 | 000P12DZM2 | EB HWY 30 / 29TH AVE, IA | III | 1 | — | DERYCHES FAMILY FARMS | Truck Tractor Semi-trailer |
PETERBILT WILSON |
1XPHD49X9ED248583 1W1K44125S6636102 |
IA HC3602 IA OQR290 |
| 392.2-SLLS2 | State/Local Laws - Speeding 6-10 miles per hour over the speed limit | Speeding 2 | ||||||||
| October 5, 2024 | 000P12DZGJ | SB 6TH ST / HWY 30, IA | III | 1 | — | SCHULTE FARMS | Truck Tractor Semi-trailer |
PETERBILT WILSON |
1XPHD49X4BD128346 1W1K44121R6634714 |
IA DT2149 IA NRJ441 |
| 392.2C | Failure to obey traffic control device | Dangerous Driving | ||||||||
| July 22, 2024 | 000P155620 | HWY 151/CIRCLE DR, IA | III | 2 | — | NUTRIEN AG SOLUTIONS | Truck Tractor Semi-trailer |
PETERBILT WILSON |
1XPBD49X5JD451101 1W1K4412XP7726816 |
IA FX9679 IA MNB359 |
| 392.2RG | State vehicle registration or License Plate violation | |||||||||
| 392.2RG | State vehicle registration or License Plate violation | |||||||||
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 |
|---|---|---|
| BOMGAARS | 1 | September 29, 2026 |
| LOGISTICS PARK DUBUQUE | 1 | August 7, 2026 |
| ADM | 1 | June 4, 2026 |
| ROB FRANK | 1 | April 13, 2026 |
| AGROLA | 1 | May 12, 2025 |
| DERYCHES FAMILY FARMS | 1 | December 16, 2024 |
| SCHULTE FARMS | 1 | October 5, 2024 |
| NUTRIEN AG SOLUTIONS | 1 | July 22, 2024 |
| FUESSLEY | 1 | December 29, 2023 |
History & Filings
Authority, insurance and process-agent records
Authority History
| Date | Status | Type |
|---|---|---|
| April 11, 2022 | REINSTATED | Common Carrier |
| May 18, 2016 | REVOKED | Common Carrier |
| June 19, 2012 | GRANTED | Common Carrier |
Insurance & Revocation Filings
| Date | Type | Status |
|---|---|---|
| March 1, 2022 | BI&PD Primary/Excess | On file |
| April 15, 2016 | COMMON | On Record |
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Data sourced from FMCSA MCMIS via Socrata. Record last updated: October 18, 2026.
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