Company snapshot
- Legal name
- William N Mason INC
- USDOT number
- 227340
- MC docket
- MC407667
- Physical address
- 3510 Wilkens Ave, Baltimore, MD, 21229
- Phone
- (410) 525-2288
- Power units
- 15
- Drivers
- 11
- Operation
- Interstate
- Operating radius
- Interstate 100+ mi
- Cargo
- General Freight, Building Materials, Machinery, Large Objects
- Last MCS-150 filing
- May 6, 2026
Operating authority
- Common authority
- Not held
- Contract authority
- Active
- Broker authority
- Not held
- Authority granted
- Jan 19, 1983
- MCSIP step
- 0
Insurance on file
- Insurer (writing paper)
- Sentry
- Filing form
- BMC-91X
- Coverage amount
- $750,000
- BI/PD on file
- $750,000
- Estimated renewal window
- Q1 2024
Safety record
- FMCSA safety rating
- Satisfactory
- Roadside inspections (24 mo)
- 21
- Out-of-service inspections
- 3
- Inspections with violations
- 16
- Crashes (24 mo)
- 2
- BASICs in alert
- 0
Source: FMCSA census, Licensing & Insurance (L&I) and SMS publications, mirrored and refreshed daily. Record last synced Jul 30, 2026. Native Base is not affiliated with FMCSA; always confirm against the live federal record before binding.
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