dotsearch.usW B MASON CO INC
USDOT 348981 · BROCKTON, MA Not Authorized
W B MASON CO INC is a carrier / shipper registered with the FMCSA under USDOT number 348981, based in BROCKTON, MA. It operates in interstate commerce. It does not currently hold active for-hire operating authority on record. Its fleet includes 834 power units and 898 drivers. Its most recent FMCSA safety rating is Conditional. This record was last updated 2026-09-06 from official FMCSA data.
Vetting snapshot
- Operating authority
- Not Authorized
- USDOT registration
- Active
- MCS-150 biennial update
- Current - filed 2025-12-11
- Safety rating
- Conditional
- Registered with FMCSA
- 37 years
- Fleet
- 834 power units
Safety record (FMCSA, last 24 months)
- Inspections (24 months)
- 509
- Vehicle out-of-service rate
- 5.5% (FMCSA national average roughly 21%)
- Driver out-of-service rate
- 2.2% (FMCSA national average roughly 5%)
- Crashes (24 months)
- 22, 1 fatal, 16 with injuries
- Last inspection
- 2025-10-31
Safety data as of 2026-06-24.
FMCSA record
- USDOT Number
- 348981
- Legal Name
- W B MASON CO INC
- Entity Type
- Carrier / Shipper
- USDOT Status
- Active
- Operating Authority
- Not Authorized
- Operation
- Interstate
- Business Type
- CORPORATION
- Operation Classification
- PRIVATE PROPERTY
- Physical Address
- 59 CENTRE ST, BROCKTON, MA, 02301
- Mailing Address
- 647 SUMMER ST, SOUTH BOSTON, MA
- Phone
- (617) 510-7830
- Power Units
- 834
- Trucks
- 834
- Total Drivers
- 898
- CDL Drivers
- 161
- Trailers
- 93
- Hazmat
- Yes
- Cargo Carried
- General Freight, Paper Products, Other
- Safety Rating
- Conditional
- Safety Rating Date
- 1993-10-13
- Company Officer
- JOHN BROMAGE
- MCS-150 Date
- 2025-12-11
- Registered
- 1989-03-31
- Last Updated
- 2026-09-06
Frequently asked questions
What is W B MASON CO INC's USDOT number?
W B MASON CO INC's USDOT number is 348981.
Is W B MASON CO INC authorized to operate for hire?
No. W B MASON CO INC does not currently hold active for-hire operating authority on its FMCSA record. It may still operate privately or intrastate.
Is W B MASON CO INC's USDOT registration active?
Its USDOT registration status is Active in the latest FMCSA data. Registration status reflects FMCSA filings (such as the biennial MCS-150 update), not whether the company is currently doing business.
Where is W B MASON CO INC based?
W B MASON CO INC is based in 59 CENTRE ST, BROCKTON, MA, 02301, according to its FMCSA registration.
How large is W B MASON CO INC's fleet?
W B MASON CO INC reported 834 power units and 898 drivers on its most recent FMCSA MCS-150 filing.
What is W B MASON CO INC's FMCSA safety rating?
W B MASON CO INC's FMCSA safety rating is Conditional, issued 1993-10-13.
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Source: official FMCSA / SAFER public records. Verify critical details on this carrier's official FMCSA SAFER snapshot.