Carrier profile · USDOT 635578 · Updated Aug 20, 2026
Three Phase Line Construction Inc
504 power unitsavg 5.1 yrRegional · 7 statesFARMINGTON, NH88/100
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
- 25 MAIN ST, FARMINGTON, NH, 03835
- Mailing address
- PO BOX 515, FARMINGTON, NH, 03835
- Operation
- Interstate· Hazmat
Contact
- Phone
- (603) 755-9611
- Fax
- (602) 391-2272
- Web domain
- mastec.com
Registration
- Officer
- Crystal Carr
- USDOT / docket
- 635578
- First registered
- Apr 1, 1996
- Last MCS-150
- May 6, 2026 · 2,489,939 mi (2025)
- FMCSA safety rating
- Not rated
- D-U-N-S
- 942525189
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.