Strong Rock LLC (USDOT 4377405)
3 cautions found.
- Docket (MC) number
- MC1715412
- Operating authority
- Common carrier authority: active.
- Authority granted
- 2025-05-30
- Insurance on file
- Liability (BIPD) insurance on file for $1,000,000.
- Safety rating
- No published safety rating
- Fleet on file
- 1 power units, 1 drivers
- Operation type
- Interstate
- Physical address
- 1066 S 320TH ST APT E301, FEDERAL WAY, WA 98003
- MCS-150 last filed
- 2025-04
Findings
- Far more vehicles observed than reported (Caution): This carrier reports 1 power unit on its MCS-150, but 8 distinct vehicles have been inspected operating under its USDOT across 2 states. A reported fleet far smaller than the vehicles operating under an authority can reflect an out-of-date MCS-150, a large lease-on or owner-operator fleet, or vehicles operating under this authority that the carrier did not register.
- Driver OOS rate above national average (Caution): 27.27% driver OOS over 11 inspections vs. national average 6.31%. Typically reflects HOS or CDL-compliance issues
- Driver fitness at the FMCSA intervention threshold (Caution): Driver fitness ranks 88 of 100 among similar carriers with recent violations (higher = worse). fleetfax peer estimate, not an official CSA score.
Frequently asked questions
What carrier is USDOT 4377405?
USDOT 4377405 is Strong Rock LLC, an interstate motor carrier.
What carrier is MC 1715412?
MC 1715412 is the docket number of Strong Rock LLC, USDOT 4377405.
What is Strong Rock LLC's MC number?
Strong Rock LLC's docket number is MC 1715412. Its USDOT number is 4377405.
Is Strong Rock LLC currently authorized to operate?
Common carrier authority: active. Source: FMCSA registration and licensing records.
Does Strong Rock LLC have insurance on file with FMCSA?
Liability (BIPD) insurance on file for $1,000,000.
Who provides Strong Rock LLC's insurance?
Strong Rock LLC's liability insurance is filed with FMCSA by United Financial Casualty Company.
What is Strong Rock LLC's safety record?
In the last 24 months, FMCSA records show 0 of 5 vehicle inspections ending out-of-service for Strong Rock LLC, too few inspections for a stable rate. FMCSA records also show 0 recordable crashes in the same window.
What is Strong Rock LLC's CSA score?
FMCSA does not publish a single CSA score for carriers. Strong Rock LLC's public safety data includes its roadside inspection out-of-service rates and crash record, listed on this page.
What is Strong Rock LLC's FMCSA safety rating?
Strong Rock LLC has no published FMCSA safety rating. Most US carriers have never received a rating review, so an unrated carrier is the common case, not a warning sign by itself.
Changes over time
Carriers change. Phone numbers, email addresses, insurance, authority. A sudden contact-info change is often the first sign of carrier identity fraud. fleetfax tracks these changes. Create a free account to follow changes on carriers you save.
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Sourced from FMCSA public records. Official data as of Aug 26, 2026. fleetfax surfaces the facts; brokers make the judgment.