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DISCOVER CONCRETE READY MIX CORP
Houston, TX
CarrierChk vetting signal
Review recommended
Elevated Out-of-Service Rate
46.2% of this carrier's roadside inspections in the last 24 months put a driver or vehicle out of service — higher than 89% of carriers with a comparable number of inspections. This is a CarrierChk calculation from FMCSA inspection records, not an FMCSA rating.
See details ↓
FMCSA status: Active registration · no operating authority · DOT 4170865
Active
No Safety Rating
Broker Vetting Summary
Key signals from current FMCSA records
Authority
No Active Authority
Common carrier
Insurance
Not Found
No coverage amount on file
Safety
Not Rated
46.2% OOS · 15 inspections on record
Flags · 1
Elevated Out-of-Service Rate
46.2% of this carrier's roadside inspections in the last 24 months put a driver or vehicle out of service — higher than 89% of carriers with a comparable number of inspections. This is a CarrierChk calculation from FMCSA inspection records, not an FMCSA rating.
Vetting notes
- Active FMCSA registration, but no active for-hire operating authority on record
- No active insurance filing found on record
- Vehicle out-of-service rate 38.5% — above the 20.7% national average
- 15 FMCSA inspections on record
Company Information
Registration, contact and cargo details
FMCSA Registration
DOT Number
4170865
Safety Rating
Not Rated
Operation Classification
Authorized for hire
MCS-150 Filed
December 19, 2025
FMCSA Registration
December 20, 2023
Annual Mileage
110,000 mi (2025)
Contact Information
Address
4631 Mi Estado Ct, Houston, TX 77045-5553
Phone
Email
Owner / Officer
Marleny Diaz Zambrano
Cargo Types
Building MaterialsConstruction MaterialsOther Cargo
Safety Snapshot
Out-of-service rates, violations and crashes
Safety & Inspection Summary
Total Inspections
15
Driver Inspections
6
Vehicle Inspections
15
Out-of-Service Violations
13
Violations by Category
Vehicle Maintenance86
Unsafe Driving0
Hours of Service0
OOS Rates vs. National Average
Driver OOS Rate0.0% · national avg 5.5%
✓ Below national average
Vehicle OOS Rate38.5% · national avg 20.7%
⚠ Above national average (17.8pp higher)
46.2% of 13 inspections in the last 24 months put a driver or vehicle out of service —
89th percentile among carriers with 10–24 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
14 of 14 inspections
Unsafe Driving
0 of 14 inspections
Hours of Service
0 of 14 inspections
Driver Fitness
2 of 14 inspections
Controlled Substances
0 of 14 inspections
Fleet & Operating Areas
Observed roadside activity and equipment
Where This Carrier Operates
States where this carrier's roadside inspections were recorded
FewerMore
TX15
Fleet & Equipment (5)
Vehicles identified in this carrier's inspection history. Year, make, model and equipment type are decoded from the VIN.
Power units
~5
of 3 reported to FMCSA
Trailers
—
seen at inspection
Equipment types observed
Truck
4
Tractor
1
Units on record
| Vehicle | Type | VIN | Inspections | With OOS |
|---|---|---|---|---|
| 2001 Kenworth T800 | Truck · Class 8 | 1NKDL00XX1J866336 | 7 | 5 |
| 2000 Kenworth W900 | Truck · Class 8 | 1NKWL00XXYR849184 | 4 | 1 |
| 2014 Kenworth T8 Series | Truck · Class 8 | 1NKDLP0X9EJ394113 | 2 | — |
| 2003 Freightliner FLD120 | Tractor · Class 8 | 1FUJAHASX3DK67510 | 1 | 1 |
| 2028 Kenworth T8 Series | Truck · Class 8 | 1NKDL90X8WR772470 | 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 (15)
| Date | Report # | Location | Level | Viol | OOS | Shipper | Unit Type | Make | VIN | License |
|---|---|---|---|---|---|---|---|---|---|---|
| March 17, 2026 | 7DWC9DCAJ1 | 3500 EASTEX FWY EAS, TX | II | 4 | 1 | — | Straight Truck |
KENWORTH |
1NKDL00XX1J866336 |
TX XKK3895 |
| 393.9TS | OOSInoperative turn signal | Lighting | ||||||||
| 393.19 | Inoperative/Defective Hazard Warning Lamp | Lighting | ||||||||
| 393.9 | Inoperable Required Lamp | Clearance Identification Lamps/Other | ||||||||
| 396.17C | Operating a CMV without proof of a periodic inspection | Inspection Reports | ||||||||
| December 20, 2025 | 7BHD9DBRBH | 1900 N MAIN ST, TX | I | 3 | — | FOB | Straight Truck |
KENWORTH |
1NKDLP0X9EJ394113 |
TX WWS0106 |
| 393.47E | Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt | Brakes Out of Adjustment | ||||||||
| 393.53B | CMV manufactured after 10/19/94 has an automatic airbrake adjustment system that fails to compensate for wear | Brakes All Others | ||||||||
| 393.95B | Emergency Equipment - A power unit requiring fuses - missing a spare fuse for a required part or accessory (e.g., lamps required by 393.11, ABS lights or low air | Emergency Equipment | ||||||||
| December 19, 2025 | 7BG89DGT6S | SH-0288 IN HARRIS CO. (472-484, TX | I | 8 | 1 | — | Straight Truck |
KENWORTH |
1NKDL00XX1J866336 |
TX XKK3895 |
| 393.9TS | OOSInoperative turn signal | Lighting | ||||||||
| 393.78 | Wipers - Inoperative / missing / damaged wipers | Windshield/ Glass/ Markings | ||||||||
| 393.11 | No or defective lighting devices or reflective material as required | Reflective Sheeting | ||||||||
| 393.9 | Inoperable Required Lamp | Clearance Identification Lamps/Other | ||||||||
| 393.19 | Inoperative/Defective Hazard Warning Lamp | Lighting | ||||||||
| 396.5B | Oil and/or grease leak | Other Vehicle Defect | ||||||||
| 393.47E | Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt | Brakes Out of Adjustment | ||||||||
| 393.53B | CMV manufactured after 10/19/94 has an automatic airbrake adjustment system that fails to compensate for wear | Brakes All Others | ||||||||
| October 23, 2025 | V252042916 | IH-45 SB @ S OF FM 8, TX | II | 31 | 4 | JOB SITE | Straight Truck |
FREIGHTLINER |
1FUJAHASX3DK67510 |
TX TMZ2795 |
| 383.23A2 | OOSOperating a CMV without a CDL | License-related: High | ||||||||
| 391.41APC | OOSMedical (Certificate) - Operating a property-carrying vehicle without a valid medical certificate in possession or on file with the state drivers licensing agency | Medical Certificate | ||||||||
| 393.9 | OOSInoperable Required Lamp | Clearance Identification Lamps/Other | ||||||||
| 393.9TS | OOSInoperative turn signal | Lighting | ||||||||
| 390.21A | Not marked in accordance with regulations | |||||||||
| 393.11 | No or defective lighting devices or reflective material as required | Reflective Sheeting | ||||||||
| 393.11 | No or defective lighting devices or reflective material as required | Reflective Sheeting | ||||||||
| 393.11 | No or defective lighting devices or reflective material as required | Reflective Sheeting | ||||||||
| 393.203A | Cab door missing/broken | Cab Body Frame | ||||||||
| 393.205C | Wheel fasteners loose and/or missing | Wheels Studs Clamps Etc. | ||||||||
| 393.205C | Wheel fasteners loose and/or missing | Wheels Studs Clamps Etc. | ||||||||
| 393.24A | Non-compliance with headlamp requirements | Lighting | ||||||||
| 393.28 | Improper or no wiring protection as required | Other Vehicle Defect | ||||||||
| 393.30 | Improper battery installation | Other Vehicle Defect | ||||||||
| 393.45DLUV | Brake Connections with Leaks Under Vehicle | Brakes All Others | ||||||||
| 393.45DLUV | Brake Connections with Leaks Under Vehicle | Brakes All Others | ||||||||
| 393.78 | Wipers - Inoperative / missing / damaged wipers | Windshield/ Glass/ Markings | ||||||||
| 393.78 | Wipers - Inoperative / missing / damaged wipers | Windshield/ Glass/ Markings | ||||||||
| 393.83G | Exhaust - Discharging at a point forward or directly below the driver or sleeper compartment | Exhaust Discharge | ||||||||
| 393.9 | Inoperable Required Lamp | Clearance Identification Lamps/Other | ||||||||
| 393.9 | Inoperable Required Lamp | Clearance Identification Lamps/Other | ||||||||
| 393.9 | Inoperable Required Lamp | Clearance Identification Lamps/Other | ||||||||
| 393.9 | Inoperable Required Lamp | Clearance Identification Lamps/Other | ||||||||
| 393.95A | No/discharged/unsecured fire extinguisher | Emergency Equipment | ||||||||
| 393.95F | Emergency Equipment - Stopped vehicle warning devices missing or improper | Emergency Equipment | ||||||||
| 396.17C | Operating a CMV without proof of a periodic inspection | Inspection Reports | ||||||||
| 396.5B | Oil and/or grease leak | Other Vehicle Defect | ||||||||
| 396.5B | Oil and/or grease leak | Other Vehicle Defect | ||||||||
| 392.2RG | State vehicle registration or License Plate violation | |||||||||
| 392.2RG | State vehicle registration or License Plate violation | |||||||||
| 392.2RG | State vehicle registration or License Plate violation | |||||||||
| October 22, 2025 | 79UB9DGRG4 | 2100 REED RD, TX | II | 2 | — | — | Straight Truck |
KENWORTH |
1NKWL00XXYR849184 |
TX VXK2708 |
| 393.9 | Inoperable Required Lamp | Clearance Identification Lamps/Other | ||||||||
| 393.9 | Inoperable Required Lamp | Clearance Identification Lamps/Other | ||||||||
| September 9, 2025 | 78N79DCA8H | 9800 SOUTH FWY, TX | I | 4 | — | — | Straight Truck |
KENWORTH |
1NKWL00XXYR849184 |
TX VXK2708 |
| 393.9H | Inoperable head lamps | Lighting | ||||||||
| 393.9 | Inoperable Required Lamp | Clearance Identification Lamps/Other | ||||||||
| 393.45B2UV | Brake Hose or Tubing Chafing and/or Kinking Under Vehicle | Brakes All Others | ||||||||
| 393.45B2UV | Brake Hose or Tubing Chafing and/or Kinking Under Vehicle | Brakes All Others | ||||||||
| August 15, 2025 | V251988552 | HWY-90, TX | II | 2 | — | DISCOVER CONCRETE READY MIX C | Straight Truck |
KENWORTH |
1NKDLP0X9EJ394113 |
TX WWS0106 |
| 393.78 | Wipers - Inoperative / missing / damaged wipers | Windshield/ Glass/ Markings | ||||||||
| 396.17C | Operating a CMV without proof of a periodic inspection | Inspection Reports | ||||||||
| August 12, 2025 | 77V79DBR9O | 16500 SH 288, TX | II | 2 | 1 | FOB | Straight Truck |
KENWORTH |
1NKDL00XX1J866336 |
TX SLM0577 |
| 383.23A2 | OOSOperating a CMV without a CDL | License-related: High | ||||||||
| 396.17C | Operating a CMV without proof of a periodic inspection | Inspection Reports | ||||||||
| July 14, 2025 | 77279DCA4X | 6900 SOUTH FWY, TX | I | 7 | 1 | — | Straight Truck |
KENWORTH |
1NKWL00XXYR849184 |
TX VXK2708 |
| 392.9A2 | OOSFailing to secure vehicle equipment | General Securement | ||||||||
| 393.9 | Inoperable Required Lamp | Clearance Identification Lamps/Other | ||||||||
| 396.5B-HWSLIW | Hubs - Wheel seal leaking - inner wheel | Wheels Studs Clamps Etc. | ||||||||
| 396.5B | Oil and/or grease leak | Other Vehicle Defect | ||||||||
| 392.2RG | State vehicle registration or License Plate violation | |||||||||
| 393.47E | Brake Out of Adjustment - Roto, Clamp (Short & Long), DD-3, or Bolt | Brakes Out of Adjustment | ||||||||
| 393.51 | No or defective brake warning device or pressure gauge | Brakes All Others | ||||||||
| June 19, 2025 | 76DC9DBE26 | 21850 WEST RD, TX | II | 3 | — | BULLS READY MIX | Straight Truck |
KENWORTH |
1NKDL90X8WR772470 |
TX MMV1556 |
| 393.95A | No/discharged/unsecured fire extinguisher | Emergency Equipment | ||||||||
| 396.5B | Oil and/or grease leak | Other Vehicle Defect | ||||||||
| 396.17C | Operating a CMV without proof of a periodic inspection | Inspection Reports | ||||||||
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 |
|---|---|---|
| FOB | 2 | December 20, 2025 |
| DISCOVER CONCRETE READY MIX C | 1 | August 15, 2025 |
| BULLS READY MIX | 1 | June 19, 2025 |
| RHINO READY MIX | 1 | July 4, 2024 |
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Data sourced from FMCSA MCMIS via Socrata. Record last updated: September 20, 2026.
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