FMCSA Carrier Profile
TRI STATE STONE AND BUILDING SUPPLY INC
Bethesda, MD
Active
No Safety Rating
Authority
No Active Authority
Common carrier
Insurance
Not Found
No coverage amount on file
Safety
Not Rated
33.3% OOS · 9 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
- No active insurance filing found on record
- Vehicle out-of-service rate 50.0% — above the 20.7% national average
- 9 FMCSA inspections on record
FMCSA Registration
DOT Number
130616
Operating Status
Active
Safety Rating
Not Rated
Entity Type
Corporation
MCS-150 Filed
September 18, 2024
FMCSA Registration
June 1, 1974
Annual Mileage
181,161 mi (2023)
Contact Information
Address
8200 Seven Locks Rd, Bethesda, MD 20817-2074
Phone
Email
Owner / Officer
Brian A Porto
Officer 2
Joseph B Porto
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Out-of-Service Rate
33.3% of inspections ended in an out-of-service order
6 inspections in 24 months
Vehicle OOS Rate
40.0%
Driver OOS Rate
0.0%
Ranks in the 63rd percentile among carriers with 5–9 inspections — lower is better. CarrierChk calculation from FMCSA roadside inspection records, not an FMCSA score.
Safety & Inspection Summary
Total Inspections
9
Driver Inspections
3
Vehicle Inspections
8
Total OOS Orders
4
Violations by Category
Vehicle Maintenance6
Unsafe Driving0
Hours of Service0
OOS Rates vs. National Average
Driver OOS Rate0.0% · national avg 5.5%
✓ Below national average
Vehicle OOS Rate50.0% · national avg 20.7%
⚠ Above national average (29.3pp higher)
Inspection Trend by Year
2026
2025
2024
Inspection Records (9)
| Date | State | Level | Vehicle | Viol. | Status |
|---|---|---|---|---|---|
| April 10, 2026 | MD | Level II — Walk-Around | INTERNATIO · 1HTWPAZR35J052448 | 1 | 1 OOS |
| September 29, 2025 | MD | Level II — Walk-Around | MACK · 1M2AG11C76M024243 | 0 | Clean |
| August 22, 2025 | MD | Level II — Walk-Around | MACK · 1M2AG11C55M016916 | 0 | Clean |
| July 31, 2025 | MD | Level III — Driver Only | INTERNATIO · 1HTWPAZR35J052448 | 0 | Clean |
| July 21, 2025 | MD | Level II — Walk-Around | INTERNATIO · 1HTWPAZR35J052448 | 0 | Clean |
| June 10, 2025 | MD | Level I — Full | MACK · 1M2AG10Y67M062934 | 2 | 1 OOS |
| August 15, 2024 | MD | Level II — Walk-Around | MACK · 1M2P270C11M056269 | 1 | 1 OOS |
| August 7, 2024 | MD | Level II — Walk-Around | PTRB · 1XP5DB9X84D814223 | 1 | 1 OOS |
| March 4, 2024 | US | Level I — Full | — | 1 | Passed |
Where This Carrier Operates
States where this carrier's roadside inspections were recorded
FewerMore
MD8
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 14 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 |
| 2023 Great Dane Trailers | Flatbed · 48 ft | 1GR4M9629PH450962 | 1 | 1 |
| 2007 Mack CV (Granite) | Tractor · Class 8 | 1M2AG10Y67M062934 | 1 | 1 |
| 2005 Mack CV (Granite) | Truck · Class 8 | 1M2AG11C55M016916 | 1 | — |
| 2006 Mack CV (Granite) | Truck · Class 8 | 1M2AG11C76M024243 | 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.
Other Carriers in Bethesda, MD
Data sourced from FMCSA MCMIS via Socrata. Last updated: August 28, 2026.
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