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Carrier profile · USDOT 348981 · Data as of Oct 7, 2026

W B Mason Co Inc

Brockton, MA · Interstate carrier · Since 1989
No MC authorityConditional ratingHazmat
Cargo carriedGeneral FreightPaper ProductsOffice Products and Supplies for the Office Place
View on FMCSA SAFERCall (617) 510-7830
834
Power units
898
Drivers
507
Inspections · 24 mo
14
Crashes · 24 mo
25M
Annual miles
37 yr
Registered
80
/ 100
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2 flags to check before loading

1 fatal crash in 24 months. Conditional FMCSA safety rating.

How we scored it · 5 factors
Operating authority20/20
Insurance20/20
Out-of-service rates20/20
Crashes & rating0/20
Continuity & identity20/20

Composite of public FMCSA authority, insurance, inspection and crash records weighted against the national fleet. Decision support, not an official FMCSA safety rating.

Safety

FMCSA inspections & crashes · 24 mo · AS OF OCT 7, 2026
Vehicle out-of-service
11.3%▼ below avg
National 22.26% · 33 of 292 inspections
Driver out-of-service
2.6%▼ below avg
National 6.67% · 13 of 507 inspections
Crashes
14
1 fatal8 injury13 tow-away
Crash rate 0.28 per 1M mi
Total inspections
507
Driver inspections
507
Vehicle inspections
292
People injured
9
Fatalities
1
FMCSA rating
Conditional (1993)

Enforcement

FMCSA closed cases

Closed enforcement cases — case numbers, violation codes and the amount settled — are available after you create a free account.

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Authority & insurance

FMCSA L&I · AS OF OCT 7, 2026

No operating authority (MC/FF docket) on file. Private and intrastate carriers don't need one; interstate for-hire carriers and brokers do.

Equipment

SELF-REPORTED ON MCS-150
834
Power units
834
Trucks
—
Tractors owned
6
Trailers owned
898
Drivers
161
CDL drivers
Registered to haul hazardous materials.

Operations & cargo

FMCSA CENSUS
InterstatePrivate Property
Cargo carried
General FreightPaper ProductsOffice Products and Supplies for the Office Place
Annual mileage
24,574,757 mi (2025)

Identity & federal record

FMCSA census · MCS-150
USDOT
348981
MC / docket
None
Legal name
W B Mason Co Inc
DBA
—
Entity type
Carrier
Operation
Interstate
First registered
Mar 31, 1989
Last MCS-150
Dec 11, 2025
Safety rating
Conditional
Drivers (CDL)
898 (161)
Hazmat
Yes
Business type
Corporation

Fraud & network signals

For review, not a verdict.

No prior revocation
FMCSA shows no link to a previously revoked authority.
Unique phone number
Not shared with any other active USDOT.
Unique email address
Not shared with any other active USDOT.
Unique street address
Not shared with any other active USDOT.

Frequently asked

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?

It does not hold MC operating authority, which private and intrastate carriers do not need.

What is W B Mason Co Inc's safety record?

Over the last 24 months: 507 roadside inspections, a 11.3% vehicle and 2.6% driver out-of-service rate, and 14 reportable crashes (1 fatal). FMCSA safety rating: Conditional.

How big is W B Mason Co Inc's fleet?

834 power units and 898 drivers per its MCS-150 filed Dec 11, 2025.

Where is W B Mason Co Inc located?

W B Mason Co Inc is located at 59 Centre St, Brockton, MA, 02301. Phone: (617) 510-7830.

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Source: FMCSA public records via the U.S. DOT Open Data Portal. Carrier Search presents the federal record and computed signals for decision support only. It is not an FMCSA safety rating and not a recommendation to use or avoid any carrier. Verify authority and insurance before tendering.