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W B Mason Co Inc (DOT# 348981) – FMCSA Carrier Profile

DOT# 348981● Active
Updated: 2026-03-09

W B Mason Co Inc is a registered motor carrier with the FMCSA under USDOT number 348981. The company operates from Brockton, MA and maintains an active operating status with 834 power units and 898 drivers on record.

Safety Rating

FMCSA Safety Rating
⚠ Conditional
Rated: October 13, 1993

W B Mason Co Inc holds a "Conditional" safety rating from the Federal Motor Carrier Safety Administration (FMCSA). This rating indicates that some safety deficiencies were found during the most recent compliance review conducted by FMCSA. View official FMCSA record →

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Company Information

Address59 Centre St, Brockton, MA, 02301
Phone(617) 510-7830
Emailjohn.burns@wbmason.com
Entity TypePrivate Property
OperationInterstate
Power Units834
Drivers898
MCS-150 FiledDecember 11, 2025
Annual Mileage24,574,757 mi (2025)
All carriers in Massachusetts→Carriers in Brockton, MA→

Inspection Summary

All-time Inspections
All-time
483
Total
43
OOS
12
Driver OOS
31
Vehicle OOS
OOS Rate8.90%
The out-of-service (OOS) rate represents the percentage of inspections that resulted in the carrier being placed out of service.

Crash History

Crash Records
All-time
23
Total
1
Fatal
15
Injuries
0
Tow-Away

BASICS Safety Scores

BASICS Scores
Higher = more risk · FMCSA Behavior Analysis and Safety Improvement Categories
0.4
Unsafe Driving
0.0
HOS Compliance
0.1
Driver Fitness
0.0
Controlled Substances
2.1
Vehicle Maintenance
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Frequently Asked Questions

What is USDOT Number 348981?
USDOT number 348981 is assigned to W B Mason Co Inc, an active motor carrier registered with the FMCSA, based in Brockton, MA.
What is the safety rating of W B Mason Co Inc?
W B Mason Co Inc has a safety rating of Conditional as of October 13, 1993.
How many inspections has W B Mason Co Inc had?
W B Mason Co Inc has recorded 483 total inspections with 43 out-of-service orders, representing an OOS rate of 8.90%.
Where is W B Mason Co Inc located?
W B Mason Co Inc is headquartered at 59 Centre St, Brockton, MA 02301.

Data sourced from the FMCSA Open Data Portal. Updated monthly. DOT# 348981 · Last updated: 2026-03-09. View official FMCSA record →