Carrier profile · USDOT 2373568 · Updated Jun 13, 2026
TRIANGLE CONTRACTING LLC
17 power unitsavg 5.5 yrLocal · 2 statesFREDERICK, MD94/100
AUTHORITY STATUS UNKNOWNHAZMAT
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
- 313 E 4TH STREET, FREDERICK, MD, 21701
- Mailing address
- PO BOX 489, FREDERICK, MD, 21701
- Operation
- Interstate· Hazmat
Contact
- Phone
- (301) 676-5090
- Fax
- (410) 649-5282
- Web domain
- trianglecontracting.com
Registration
- Officer
- Joseph Humbertson
- USDOT / docket
- 2373568
- First registered
- Jan 27, 2013
- Last MCS-150
- Sep 24, 2025 · 350,000 mi (2023)
- FMCSA safety rating
- Not rated
- Recordable crash rate
- 0.00
- D-U-N-S
- 928285696
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.