HaulerCheck · https://haulercheck.com/carrier/573036-mason-trucking-co-inc/ · Checked 2026-10-20 11:41 UTC · Census and inspections Oct 19, 2026 · Authority and insurance: Last known · FMCSA snapshot May 14, 2026
MASON TRUCKING CO INC
Review before booking · 1 signal
How risk signals workFacts from the FMCSA record that call for a closer look. They are not a finding of wrongdoing. Authority and insurance are last known from May 14, 2026.
- Vehicle out-of-service rate well above the state average58.3% vs Washington average 24.5%.
Cargo cover filed: amount not published
Not a live check. FMCSA has not published a Motus record for this carrier, so authority and insurance show the last known status from May 14, 2026. Confirm on Motus ↗ before booking.
What to verify next
- Confirm authority and insurance on the official Motus record ↗: our copy is the last known status from May 14, 2026. Safety record: SAFER ↗.
- Call back on the number on file, (360) 537-4647, not a number from an email or load board.
- Check that the MC number you were given is MC277792.
- Ask the insurer for a certificate of insurance naming you as holder, with cargo coverage that fits your load.
Insurance on file
Liability (BI&PD) pays for injury and damage to other people and property; it does not cover the freight. Cargo insurance covers the freight. FMCSA only requires cargo filings from household goods carriers and freight forwarders, so most carriers file none: ask for a cargo certificate that fits your load. Cargo cover filed: amount not published.
| Type | Docket | Layer | Insurer | Coverage | Effective | Status |
|---|---|---|---|---|---|---|
| Cargo | MC277792 | — | LANDMARK AMERICAN INSURANCE COMPANY Policy LHD335710 · 34 | — | Jul 15, 2004 | Active |
| Liability (BI&PD) | MC277792 | Primary | AMERICAN FOREST CASUALTY COMPANY RRG Policy AFC040650-25 · 91X | $2,000,000 | Jul 15, 2025 | Active |
Insurance that ended since 2024 · 3 policies
| Ended | Type | Insurer | Effective | How it ended |
|---|---|---|---|---|
| Apr 2, 2026 | Liability (BI&PD) MC277792 | AMERICAN FOREST CASUALTY COMPANY RRG Policy AFC040650-25 | Jul 15, 2025 | Cancelled at term end |
| Jul 15, 2025 | Liability (BI&PD) MC277792 | AMERICAN FOREST CASUALTY COMPANY RRG Policy AFC040650-25 | Jul 15, 2025 | Replaced |
| Jul 15, 2024 | Liability (BI&PD) MC277792 | AMERICAN FOREST CASUALTY COMPANY RRG Policy AFC040650-23 | Jul 15, 2023 | Replaced |
"Replaced" means a new filing took over the day the old one ended. "Cancelled" means the insurer or the company ended the policy; if no replacement was filed in time, the company was uninsured with FMCSA in between.
Source: Last known · FMCSA snapshot May 14, 2026. Identical filings repeated in the FMCSA data are shown once; a filing listed under two dockets is one policy, not extra coverage. Coverage is the maximum amount filed with FMCSA, not the full policy.
Last known filings. Insurance for this carrier comes from the FMCSA snapshot of May 14, 2026. Policies may have been cancelled or replaced since. Confirm current filings: Motus record ↗ and ask the insurer for a certificate naming you as holder.
Roadside inspections Oct 19, 2024 – Oct 19, 2026
14 of 24 · Washington avg 24.5%
1 of 41 · Washington avg 4.9%
By quarter inspections and vehicle out-of-service rate
Bar height: inspections in the quarter. Percentage: vehicles put out of service, of vehicle inspections. The first and last quarters are partial.
Where it was inspected 2 states and provinces, 24 months
- WA 38 92.7%
- OR 3 7.3%
Vehicles seen at inspections different VINs, 24 months
Power units: 17
13 tractors · 4 straight trucks
Freightliner 7Kenworth 5Peterbilt 5
8 power units declared on the MCS-150. Inspections see only part of a fleet, so fewer here is normal; many more can mean the registration is out of date.
Trailers: 16
12 semi-trailers · 3 pole trailer · 1 log trailers
Western Star 3Fruehauf 2Trail King 1Wilson 1
Includes trailers the company pulled but does not own, such as shipper or leasing trailers.
Shippers named on inspection reports 24 months
Alta Forest Products 6Sierra Pacific 4Rayonier 3ALTA 2Interfor 2Weyerhaeuser 2Taiga Building Products 1Unkown 1
As written by roadside inspectors, who note the shipper on the bill of lading. Only names that appear on at least three different carriers' reports are shown, so private individuals are never listed. A shipper on a report is not a reference.
10 most recent inspections
| Date | State | Level | Violations | Out of service |
|---|---|---|---|---|
| Oct 5, 2026 | WA | 2 | 3 | Yes |
| Sep 17, 2026 | WA | 3 | 5 | No |
| Sep 15, 2026 | WA | 3 | 1 | No |
| Sep 15, 2026 | WA | 3 | 0 | No |
| Aug 31, 2026 | WA | 3 | 1 | No |
| Jul 31, 2026 | WA | 2 | 6 | Yes |
| Apr 24, 2026 | WA | 3 | 0 | No |
| Apr 15, 2026 | WA | 3 | 1 | No |
| Apr 3, 2026 | WA | 3 | 1 | No |
| Apr 3, 2026 | WA | 3 | 1 | No |
How these rates are calculated
Period: Oct 19, 2024 – Oct 19, 2026. Vehicle rate = vehicle inspections with a vehicle out-of-service order ÷ vehicle inspections (levels 1, 2, 5 and 6). Driver rate uses levels 1, 2, 3 and 6. The Washington average covers 48,864 vehicle and 83,421 driver inspections of all Washington-based carriers in this period. It mixes every type of operation, so compare with care; rates based on a handful of inspections say little. FMCSA's own SMS measures are weighted differently: SMS profile ↗ · SAFER snapshot ↗
Violations in FMCSA's SMS last 24 months
57 violations counted in FMCSA's Safety Measurement System (SMS), 17 of them serious enough to put the driver or vehicle out of service.
Why is this different from the 90 violations above?
The inspections section's number counts every violation written on the inspection reports in our Oct 19, 2024 – Oct 19, 2026 window. The SMS count comes from FMCSA's own monthly SMS snapshot, which uses its own 24-month window and only the violations it scores. Both are FMCSA figures; they measure different things.
| Category (FMCSA BASIC) | Violations | Out of service | Share | Washington share |
|---|---|---|---|---|
| Vehicle Maintenance | 50 | 16 | 87.7% | 71.3% |
| Unsafe Driving | 5 | 0 | 8.8% | 12.0% |
| Driver Fitness | 2 | 1 | 3.5% | 3.9% |
10 most frequent violations
| Violation | Times | Out of service |
|---|---|---|
| Operating a CMV without documentation of a periodic inspection Inspection Reports · Vehicle Maintenance · code 39617CPI | 5 | 0 |
| Driver - Failed to use seat belt while operating a CMV Seat Belt · Unsafe Driving · code 39216D | 3 | 0 |
| Air Brake - Audible air leak at a proper connection Brakes All Others · Vehicle Maintenance · code 39345DB | 3 | 0 |
| Lighting - Identification lamp(s) inoperative Clearance Identification Lamps/Other · Vehicle Maintenance · code 3939ALIL | 3 | 0 |
| Lighting - Tail lamp - Any inoperative Lighting · Vehicle Maintenance · code 3939ALRLI | 3 | 0 |
| Cargo - Cargo not secured to prevent leaking/spilling/blowing/falling from CMV Improper Load Securement · Vehicle Maintenance · code 393100BC | 2 | 2 |
| Lighting - Turn signal - Any inoperative on the rearmost vehicle. Lighting · Vehicle Maintenance · code 3939ALTSI | 2 | 2 |
| Cargo - Insufficient tiedowns (w/o headerboard/blocking) for article(s) of cargo longer than 5 feet and no more than 10 feet Tiedown · Vehicle Maintenance · code 393110B2IIC | 2 | 2 |
| Tires - All others leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS Tires · Vehicle Maintenance · code 39375A3TAOL | 2 | 2 |
| Air Brake - Hose/tubing damaged or not secured Brakes All Others · Vehicle Maintenance · code 39345B2BAIR | 2 | 0 |
Source: FMCSA SMS violation file, inspections in the last 24 months, published Oct 19, 2026. "Share" is this company's mix of violations; the Washington column is the mix across all Washington-based carriers, so you can see which kinds of problems stand out. A high count partly reflects fleet size and how often trucks are inspected.
Crashes Oct 19, 2024 – Oct 19, 2026
3 most recent crashes
| Date | Location | Fatalities | Injuries |
|---|---|---|---|
| Sep 22, 2025 | Olympia, WA | 0 | 0 |
| May 29, 2025 | Castle Rock, WA | 0 | 1 |
| Apr 9, 2025 | Snohomish, WA | 0 | 0 |
Reportable crashes do not imply the carrier was at fault.
Company details FMCSA census · Oct 19, 2026
| USDOT number | 573036 |
|---|---|
| MC / docket | MC277792 |
| Legal name | MASON TRUCKING CO INC |
| Operation | Interstate |
| Business type | Corporation |
| Power units | 8 |
| Drivers | 7 |
| Annual mileage | 235,751 (2025) |
| Hazmat | Yes |
| Safety rating | Satisfactory (Sep 3, 2003) |
| USDOT number added | Aug 26, 1994 · 32 years ago |
| Last MCS-150 update | Jun 16, 2026 |
| Email domain on file | @masontruckingco.com |
Equipment as declared on the MCS-150
| Owned | Term-leased | |
|---|---|---|
| Tractors | 1 | 0 |
| Straight trucks | 4 | 1 |
| Trailers | 7 | 0 |
Term-leased equipment usually belongs to owner-operators driving under this company's authority.
Cargo carried
General FreightLogs, Poles, Beams, LumberMachinery, Large ObjectsGrain, Feed, HayPaper Products
Change history
No changes to name, contact details, authority or insurance since we started tracking on Oct 18, 2026. We compare every company's FMCSA record each day.
to see it on your watchlist when something changes.
Questions about MASON TRUCKING CO INC
What does MASON TRUCKING CO INC's operating authority allow?
MC277792: Common carrier (may haul regulated property for hire for the general public).
Which information about MASON TRUCKING CO INC is old or missing?
Operating authority is the last known status from the FMCSA snapshot of May 14, 2026, not a current check. Insurance filings are from the same May 14, 2026 snapshot.
What should I verify before booking MASON TRUCKING CO INC?
Confirm the authority and insurance on the Motus record for USDOT 573036. Call the company back on the phone number on file, (360) 537-4647, not a number from an email or load board message. Check that the MC number the dispatcher gave you matches MC277792, and ask the insurer for a certificate of insurance naming you as holder, with cargo coverage that fits your load.
Other trucking companies in Aberdeen, WA →
Company details from the FMCSA Company Census File (Oct 19, 2026). Inspections and crashes from FMCSA MCMIS files. About our data · Report an error on this page (how corrections work).
Page generated 2026-10-20 11:41 UTC.