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TRI STATE STONE AND BUILDING SUPPLY INC
Bethesda, MD
CarrierChk vetting signal
No flags raised
Authority, insurance, safety rating, crash records and out-of-service rates checked
FMCSA status: Active registration · no operating authority · DOT 130616
Active
Satisfactory
Broker Vetting Summary
Key signals from current FMCSA records
Authority
No Active Authority
Common carrier
Insurance
Not Found
No coverage amount on file
Safety
Satisfactory
37.5% OOS · 17 inspections on record
✓ No risk flags found on authority or insurance records
Vetting notes
- Active FMCSA registration, but no active for-hire operating authority on record
- Registered with FMCSA as a private carrier — not registered to haul other companies' freight for hire
- No active insurance filing found on record
- FMCSA safety rating: Satisfactory
- Vehicle out-of-service rate 42.9% — above the 20.7% national average
- Driver out-of-service rate 0.0% — below the 5.5% national average
- 17 FMCSA inspections on record
Company Information
Registration, contact and cargo details
FMCSA Registration
DOT Number
130616
Safety Rating
Satisfactory
Entity Type
Corporation
Operation Classification
Private (property)
MCS-150 Filed
October 29, 2026
FMCSA Registration
June 1, 1974
Annual Mileage
148,562 mi (2025)
Contact Information
Address
8200 Seven Locks Rd, Bethesda, MD 20817-2074
Phone
Email
Website
Owner / Officer
Brian A Porto
Officer 2
Joseph B Porto
Cargo Types
Building MaterialsConstruction Materials
Safety Snapshot
Out-of-service rates, violations and crashes
Safety & Inspection Summary
Total Inspections
17
Driver Inspections
5
Vehicle Inspections
14
Out-of-Service Violations
8
Violations by Category
Vehicle Maintenance11
Unsafe Driving3
Hours of Service0
OOS Rates vs. National Average
Driver OOS Rate0.0% · national avg 5.5%
✓ Below national average
Vehicle OOS Rate42.9% · national avg 20.7%
⚠ Above national average (22.2pp higher)
37.5% of 8 inspections in the last 24 months put a driver or vehicle out of service —
69th 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
3 of 7 inspections
Unsafe Driving
0 of 8 inspections
Hours of Service
0 of 8 inspections
Driver Fitness
0 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
MD10
US1
Fleet & Equipment (7)
Vehicles identified in this carrier's inspection history. Year, make, model and equipment type are decoded from the VIN.
Power units
~6
of 20 reported to FMCSA
Trailers
~1
seen at inspection
Equipment types observed
Truck
4
Tractor
2
Flatbed
1
Units on record
| Vehicle | Type | VIN | Inspections | With OOS |
|---|---|---|---|---|
| 2005 International 7500 | Truck · Class 8 | 1HTWPAZR35J052448 | 3 | 1 |
| 2007 Mack CV (Granite) | Tractor · Class 8 | 1M2AG10Y67M062934 | 2 | 1 |
| 2006 Mack CV (Granite) | Truck · Class 8 | 1M2AG11C76M024243 | 2 | 1 |
| 2023 Great Dane Trailers | Flatbed · 48 ft | 1GR4M9629PH450962 | 1 | 1 |
| 2005 Mack CV (Granite) | Truck · Class 8 | 1M2AG11C55M016916 | 1 | — |
| 2001 Mack RD | Truck · Class 8 | 1M2P270C11M056269 | 1 | 1 |
| 2004 Peterbilt 379 | Tractor · Class 8 | 1XP5DB9X84D814223 | 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 (17)
| Date | Report # | Location | Level | Viol | OOS | Shipper | Unit Type | Make | VIN | License |
|---|---|---|---|---|---|---|---|---|---|---|
| September 2, 2026 | 3064C01677 | PERRYVILLE MD | II | — | — | — | Truck Tractor |
MACK |
1M2AG10Y67M062934 |
MD 360ED93 |
| August 31, 2026 | 0296C00882 | CLARKSBURG MD | II | 1 | 1 | VULCAN MATERIALS CO | Straight Truck |
MACK |
1M2AG11C76M024243 |
MD 357ED12 |
| 393.100B-C | OOSCargo - Cargo not secured to prevent leaking/spilling/blowing/falling from CMV | Improper Load Securement | ||||||||
| April 10, 2026 | 0310C00832 | CLARKSBURG MD | II | 1 | 1 | VULCAN | Straight Truck |
INTERNATIONAL |
1HTWPAZR35J052448 |
MD 137ED07 |
| 393.100B-C | OOSCargo - Cargo not secured to prevent leaking/spilling/blowing/falling from CMV | Improper Load Securement | ||||||||
| September 29, 2025 | 0296C00402 | CLARKSBURG MD | II | — | — | CARRIER | Straight Truck |
MACK |
1M2AG11C76M024243 |
MD 357ED12 |
| August 22, 2025 | 0240C00189 | CLARKSBURG MD | II | — | — | — | Straight Truck |
MACK |
1M2AG11C55M016916 |
MD 406E62 |
| July 31, 2025 | 2338C00009 | CLARKSBURG MD | III | — | — | VULCAN | Straight Truck |
INTERNATIONAL |
1HTWPAZR35J052448 |
MD 137ED07 |
| July 21, 2025 | 0217C00138 | CLARKSBURG MD | II | — | — | SAME | Straight Truck |
INTERNATIONAL |
1HTWPAZR35J052448 |
MD 137ED07 |
| June 10, 2025 | 0310C00222 | CLARKSBURG MD | I | 3 | 1 | CARRIER | Truck Tractor |
MACK |
1M2AG10Y67M062934 |
MD 360ED93 |
| 393.100B-C | OOSCargo - Cargo not secured to prevent leaking/spilling/blowing/falling from CMV | Improper Load Securement | ||||||||
| 393.45B2-B-AIR | Air Brake - Hose/tubing damaged or not secured | Brakes All Others | ||||||||
| 393.45B2-B-AIR | Air Brake - Hose/tubing damaged or not secured | Brakes All Others | ||||||||
| August 15, 2024 | 0217003968 | I-270 S/B HYATTSTOWN SCALEHOUS, MD | II | 1 | 1 | NICOLOCK PAVING STONES LLC | Straight Truck |
MACK |
1M2P270C11M056269 |
MD 438E40 |
| 393.110B | OOSInsufficient tiedowns to prevent forward movement for load not blocked by headerboard, bulkhead, or other cargo | Tiedown | ||||||||
| August 7, 2024 | 0310003581 | I-270 S/B HYATTSTOWN SCALEHOUS, MD | II | 1 | 1 | HANOVER | Truck Tractor Semi-trailer |
PETERBILT GREAT DANE TRAILERS |
1XP5DB9X84D814223 1GR4M9629PH450962 |
MD 995F10 MD 393819X |
| 393.110B | OOSInsufficient tiedowns to prevent forward movement for load not blocked by headerboard, bulkhead, or other cargo | Tiedown | ||||||||
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 |
|---|---|---|
| VULCAN MATERIALS CO | 3 | August 31, 2026 |
| VULCAN | 2 | April 10, 2026 |
| NICOLOCK PAVING STONES LLC | 1 | August 15, 2024 |
| HANOVER | 1 | August 7, 2024 |
| YORK BUILDING PRODUCTS | 1 | March 4, 2024 |
| VULCAM MATERIALS CO | 1 | February 26, 2024 |
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Data sourced from FMCSA MCMIS via Socrata. Record last updated: November 1, 2026.
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