Carrier profile · USDOT 130616 · Updated Jun 13, 2026
Tri State Stone and Building Supply Inc
14 power unitsavg 21.2 yrLocal · 1 statesBETHESDA, MD86/100
AUTHORITY STATUS UNKNOWN
Identity & Federal
The official FMCSA identity — legal name, DBA, addresses, contact, officers, and registration — alongside the daily-captured federal-record activity feed, monitored daily by Vektor.
Location
- Physical address
- 8200 SEVEN LOCKS RD, BETHESDA, MD, 20817-2074
- Mailing address
- P O BOX 34300, BETHESDA, MD, 20827-0300
- Operation
- Intrastate (Non-Hazmat)
Contact
- Phone
- (301) 365-2100
- Fax
- (301) 365-5524
- Web domain
- carderock.com
Registration
- Officers
- Brian A Porto · Joseph B Porto
- USDOT / docket
- 130616
- First registered
- Jun 1, 1974
- Last MCS-150
- Sep 18, 2024 · 181,161 mi (2023)
- FMCSA safety rating
- Not rated
- D-U-N-S
- 2776516
Fleet (self-reported · MCS-150)
MCS-150 filing history· biennial-update cadence
Per-filing MCS-150 history (each biennial update + the fleet/mileage it reported) is being captured from the daily federal feed and will appear here as we capture the full history.
Federal record activity· monitored daily by Vektor
No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.