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MONZON TRUCKING LLC
Rock Springs, WY
CarrierChk vetting signal
Review recommended
Elevated Out-of-Service Rate
60.0% of this carrier's roadside inspections in the last 24 months put a driver or vehicle out of service — higher than 88% of carriers with a comparable number of inspections. This is a CarrierChk calculation from FMCSA inspection records, not an FMCSA rating.
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FMCSA status: Active & Authorized · DOT 3059403 · MC 54320
Conditional
Active 8 yrs, 10 mo
Broker Vetting Summary
Key signals from current FMCSA records
Authority
Active
MC-54320 · Common carrier
Insurance
On File
Artisan & Truckers Casualty Company
Safety
Conditional
60.0% OOS · 6 inspections on record
Flags · 1
Elevated Out-of-Service Rate
60.0% of this carrier's roadside inspections in the last 24 months put a driver or vehicle out of service — higher than 88% of carriers with a comparable number of inspections. This is a CarrierChk calculation from FMCSA inspection records, not an FMCSA rating.
Vetting notes
- Operating authority active for 8 yrs, 10 mo
- Insurance on file: $1,000,000
- FMCSA safety rating: Conditional
- Vehicle out-of-service rate 75.0% — above the 20.7% national average
- 6 FMCSA inspections on record
Authority & Compliance
Authority, insurance and required filings
Operating Authority
MC054320
Common Carrier
Insurance on File
ARTISAN & TRUCKERS CASUALTY COMPANY
BI&PD · $1,000,000 · Policy CA865602329
Required Filings
Liability (BIPD)
$1,000,000
Company Information
Registration, contact and cargo details
FMCSA Registration
DOT Number
3059403
MC Number
MC-54320
Safety Rating
Conditional
Operation Classification
Authorized for hire
MCS-150 Filed
November 10, 2025
FMCSA Registration
October 16, 2017
Authority Granted
November 30, 2017
Annual Mileage
157,810 mi (2023)
Contact Information
Location
Rock Springs, WY
Email
Cargo Types
General FreightMetal/Sheet SteelLogs/Poles/BeamsBuilding MaterialsMachinery/Large ObjectsOilfield EquipmentDry BulkConstruction MaterialsOther Cargo
Safety Snapshot
Out-of-service rates, violations and crashes
Safety & Inspection Summary
Total Inspections
6
Driver Inspections
2
Vehicle Inspections
5
Out-of-Service Violations
11
Violations by Category
Vehicle Maintenance36
Unsafe Driving0
Hours of Service0
OOS Rates vs. National Average
Driver OOS Rate0.0% · national avg 5.5%
✓ Below national average
Vehicle OOS Rate75.0% · national avg 20.7%
⚠ Above national average (54.3pp higher)
60.0% of 5 inspections in the last 24 months put a driver or vehicle out of service —
88th 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
4 of 4 inspections
Unsafe Driving
0 of 5 inspections
Hours of Service
0 of 5 inspections
Driver Fitness
1 of 5 inspections
Controlled Substances
0 of 5 inspections
Crash History (1)
Crashes reported to FMCSA in the last 24 months. A crash appearing here is a reported event, not a finding of fault.
1
Crashes
0
Fatalities
0
Injuries
1
Tow-aways
| Date | State | Fatal | Injured | Tow | Conditions |
|---|---|---|---|---|---|
| July 10, 2026 | WY | — | — | 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
WY3
NE1
OK1
TX1
Fleet & Equipment (7)
Vehicles identified in this carrier's inspection history. Year, make, model and equipment type are decoded from the VIN.
Power units
~3
of 1 reported to FMCSA
Trailers
~4
seen at inspection
Equipment types observed
Semi-trailer
3
Tractor
3
Incomplete Chassis
1
Units on record
| Vehicle | Type | VIN | Inspections | With OOS |
|---|---|---|---|---|
| 2017 Peterbilt 579 | Tractor · Class 8 | 1XPBD49X3HD422495 | 3 | 2 |
| Fona | Semi-trailer | 13N248206CL555834 | 1 | 1 |
| Heil | Semi-trailer | 1HLS3M7B7H7T00879 | 1 | — |
| 2018 Sfs Truck Sales | Incomplete Chassis · 40 ft | 1S95C4021JG724933 | 1 | 1 |
| 2014 Peterbilt 579 | Tractor · Class 8 | 1XPBD49X7ED226989 | 1 | — |
| 2013 Freightliner Cascadia | Tractor · Class 8 | 3AKJGLDR1DSFG0216 | 1 | 1 |
| Cps | Semi-trailer | 5MC1116268P008645 | 1 | 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 (6)
| Date | Report # | Location | Level | Viol | OOS | Shipper | Unit Type | Make | VIN | License |
|---|---|---|---|---|---|---|---|---|---|---|
| August 9, 2026 | TJDP000639 | WY, WY | I | 22 | 7 | SAME | Truck Tractor Semi-trailer |
PETERBILT SFS TRUCK SALES |
1XPBD49X3HD422495 1S95C4021JG724933 |
WY A21070 OK DY2301 |
| 396.3A1-BALR | OOSAir Brake - Fails air loss rate test | Brakes All Others | ||||||||
| 393.45B2-BHTD | OOSAir Brake - Hose/tubing damage into the outer reinforcement ply. | Brakes All Others | ||||||||
| 393.100B-C | OOSCargo - Cargo not secured to prevent leaking/spilling/blowing/falling from CMV | Improper Load Securement | ||||||||
| 393.126B-CIM | OOSIntermodal Containers - Improper securement of intermodal containers transported on container chassis vehicle(s) | Securement Device | ||||||||
| 393.126B-CIM | OOSIntermodal Containers - Improper securement of intermodal containers transported on container chassis vehicle(s) | Securement Device | ||||||||
| 393.11A1-LTSM | OOSLighting - Turn signal - Any missing on the rearmost vehicle. | Lighting | ||||||||
| 396.3A1-BOS | OOSBrake - Defective brake(s) are equal to or greater than 20% of the service brakes on the vehicle/combination | Brake Out Of Service | ||||||||
| 392.2-SLLEWA3 | State/Local Laws - Excessive weight - More than 5000 lbs over on an axle/axle groups | |||||||||
| 396.3A1-BALAC | Brake - Audible air leak from a brake chamber | Brakes All Others | ||||||||
| 393.60C | Windshield - Damaged or Discolored | Windshield/ Glass/ Markings | ||||||||
| 393.75A1-TEPBM | Tires - All others - Exposed ply or belt material in tread or sidewall area | Tires | ||||||||
| 393.78A-WS | Washers - Inoperative washing system. | Windshield/ Glass/ Markings | ||||||||
| 393.9A-LRLI | Lighting - Tail lamp - Any inoperative | Lighting | ||||||||
| 393.9A-LRLI | Lighting - Tail lamp - Any inoperative | Lighting | ||||||||
| 393.9A-LTSIR | Lighting - Turn signal -Any inoperative on a unit that is not the rearmost unit | Lighting | ||||||||
| 393.9A-LTSIR | Lighting - Turn signal -Any inoperative on a unit that is not the rearmost unit | Lighting | ||||||||
| 393.9A-LHWS | Lighting - Hazard warning signal(s) inoperative | Lighting | ||||||||
| 393.11A1-LSLM | Lighting - Stop lamps - Any missing. | Lighting | ||||||||
| 393.48A-BLMACBD | Drum Brake - Loose chamber/spider/camshaft support bracket | Brakes All Others | ||||||||
| 393.9A-LHWS | Lighting - Hazard warning signal(s) inoperative | Lighting | ||||||||
| 393.47E | Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt | Brakes Out of Adjustment | ||||||||
| 393.53B-B | Air Brake - CMV manufactured on or after 10/20/1994 has an automatic airbrake adjustment system that fails to compensate for wear | Brakes All Others | ||||||||
| July 27, 2026 | T239000087 | TERRYTOWN NE | III | 1 | — | — | Straight Truck |
PETERBILT |
1XPBD49X3HD422495 |
WY 4C180 |
| 392.2-SLL | State/Local Laws - | |||||||||
| October 19, 2025 | TBAL000094 | BOULDER, WY | II | 4 | 1 | LIBERTY ENERGY | Truck Tractor Semi-trailer |
FREIGHTLINER FONA |
3AKJGLDR1DSFG0216 13N248206CL555834 |
WY 04-C-669 ID TV8371 |
| 393.11A1-LTSM | OOSLighting - Turn signal - Any missing on the rearmost vehicle. | Lighting | ||||||||
| 392.2-SLLSOA | State/Local Laws - State operating authority violation | |||||||||
| 393.207F-SLAS | Suspension - Leaking 3 PSI in 5 minutes | Suspension | ||||||||
| 393.9A-LIL | Lighting - Identification lamp(s) inoperative | Clearance Identification Lamps/Other | ||||||||
| February 3, 2025 | D900000405 | KILP TP NB & SH 3, OK | II | 17 | 2 | MC | Truck Tractor Semi-trailer |
PETERBILT CPS |
1XPBD49X3HD422495 5MC1116268P008645 |
WY PAPER ID TT141 |
| 383.23A2-LCDLN | OOSLicense (CDL) - Operate a CMV and does not possess a valid CDL | License-related: High | ||||||||
| 393.75C-TAOTD-LT1/32 | OOSTires - Less than 1/32 inch tread depth at 3 locations/2 adjacent tread grooves | Tires | ||||||||
| 392.2-SLLSR | State/Local Laws - State registration/tag violation | |||||||||
| 392.2-SLLSR | State/Local Laws - State registration/tag violation | |||||||||
| 392.2-SLLEWG2 | State/Local Laws - Excessive weight - 2501-5000 lbs over on allowable gross weight | |||||||||
| 392.2-SLLEWA3 | State/Local Laws - Excessive weight - More than 5000 lbs over on an axle/axle groups | |||||||||
| 392.2WG | State/Local Laws - Excessive Weight Violations | |||||||||
| 392.2-SLLEWA3 | State/Local Laws - Excessive weight - More than 5000 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-SLLSIV | State/Local Laws - State insurance violation | |||||||||
| 391.45A-MCEM | Medical (Certificate) - Operating a CMV with an expired medical certificate | Medical Certificate | ||||||||
| 391.11B2-Q | Driver cannot satisfy the English language proficiency requirements of 391.11(b)(2) in accordance with the current corresponding FMCSA enforcement guidance (391. | General Driver Qualification | ||||||||
| 393.9A-LSLI | Lighting - Stop lamps - Any inoperative. | Lighting | ||||||||
| 393.78A-WS | Washers - Inoperative washing system. | Windshield/ Glass/ Markings | ||||||||
| 393.9A-LTSIR | Lighting - Turn signal -Any inoperative on a unit that is not the rearmost unit | Lighting | ||||||||
| 393.9B-LTSONR | Lighting - Turn signal - Any obscured not on the rearmost vehicle. | Lighting | ||||||||
| 393.9A-LSLI | Lighting - Stop lamps - Any inoperative. | Lighting | ||||||||
| January 3, 2025 | V251717002 | US287 SB AT CR O, TX | II | 6 | — | NONE | Truck Tractor Semi-trailer |
PETERBILT HEIL |
1XPBD49X7ED226989 1HLS3M7B7H7T00879 |
WY A15334 WY 4U1706 |
| 393.24A | Non-compliance with headlamp requirements | Lighting | ||||||||
| 393.60C | Windshield - Damaged or Discolored | Windshield/ Glass/ Markings | ||||||||
| 393.78 | Wipers - Inoperative / missing / damaged wipers | Windshield/ Glass/ Markings | ||||||||
| 396.17C | Operating a CMV without proof of a periodic inspection | Inspection Reports | ||||||||
| 396.17C | Operating a CMV without proof of a periodic inspection | Inspection Reports | ||||||||
| 392.2RG | State vehicle registration or License Plate violation | |||||||||
| March 18, 2024 | TJDC000386 | I25 NORTHBOUND MP 136, WY | II | 4 | 1 | EMPTY | Truck Tractor Semi-trailer |
PTRB C.GALLEGOS |
1XPBD49X7GD281784 3DG1S4356LG000409 |
WY A12434 ID TP5147 |
| 392.4A-POS | OOSDriver on duty and in possession of a narcotic drug / amphetamine | Drugs | ||||||||
| 392.2MI | Miscellaneous Traffic Law Violation | |||||||||
| 392.2IRP | IRP Apportioned Tag or Registration Violation | |||||||||
| 393.126 | Failure to ensure intermodal container securement | General Securement | ||||||||
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 |
|---|---|---|
| LIBERTY ENERGY | 1 | October 19, 2025 |
History & Filings
Authority, insurance and process-agent records
Authority History
| Date | Status | Type |
|---|---|---|
| December 24, 2025 | DISCONTINUED REVOCATION | Common |
| December 23, 2025 | INVOLUNTARY REVOCATION | Common |
| October 27, 2021 | DISCONTINUED REVOCATION | Common |
| October 8, 2021 | INVOLUNTARY REVOCATION | Common |
| November 5, 2020 | DISCONTINUED REVOCATION | Common |
| October 21, 2020 | INVOLUNTARY REVOCATION | Common |
| January 17, 2018 | DISCONTINUED REVOCATION | Common |
| January 4, 2018 | INVOLUNTARY REVOCATION | Common |
| November 30, 2017 | GRANTED | Common Carrier |
Insurance & Revocation Filings
| Date | Type | Status |
|---|---|---|
| February 9, 2026 | BI&PD Primary/Excess | On file |
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Data sourced from FMCSA MCMIS via Socrata. Record last updated: October 4, 2026.
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