Carrier profile · USDOT 348981 · Updated Jun 13, 2026
W B Mason Co Inc
834 power unitsavg 3.3 yrNational · 21 statesBROCKTON, MA88/100
AUTHORITY STATUS UNKNOWNRATED CONDITIONALHAZMAT
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
- 59 CENTRE ST, BROCKTON, MA, 02301
- Mailing address
- 647 SUMMER ST, SOUTH BOSTON, MA, 02110
- Operation
- Interstate· Hazmat
Contact
- Phone
- (617) 510-7830
- Web domain
- wbmason.com
Registration
- Officer
- John Bromage
- USDOT / docket
- 348981
- First registered
- Mar 31, 1989
- Last MCS-150
- Dec 11, 2025 · 24,574,757 mi (2025)
- FMCSA safety rating
- Conditional · Oct 13, 1993
- D-U-N-S
- 51807493
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.