Hazmat Carrier Finder

Updated

Quest Liner Inc

As of Oct 21, 2026, Quest Liner Inc in Dubuque, Iowa reports 344 power units and 239 drivers on its MCS-150, not rated by FMCSA.

501 Bell St, Dubuque, Iowa 52001 (563) 584-2670

Verified Oct 21, 2026 against FMCSA Company Census File (data.transportation.gov)

Quest Liner Inc (USDOT 1609038, MC-595010), doing business as Quest Liner, is an active motor carrier based in Dubuque, Iowa that FMCSA's census classifies as for-hire and that declares hazardous materials on its MCS-150. Operation: interstate. Operating authority: active for-hire authority (MC). Fleet: 344 power units and 239 drivers (239 with CDLs). It reported 22,006,141 miles for 2024 on its MCS-150. Cargo classes declared: chemicals, liquids / gases, dry bulk commodities, drive / tow away. FMCSA has not issued it a safety rating (no compliance review on record). Registration (MCS-150) last updated October 21, 2025.

Key facts

Fleet size 100–499 power units Power units, banded. source
FMCSA safety rating Not rated Satisfactory, Conditional or Unsatisfactory after an FMCSA compliance review; most carriers have never had one and are not rated. source
Rating age Not rated How old the FMCSA safety rating is. A rating reflects one compliance review on that date, not current performance; old ratings say little about the carrier today. source
Registration update overdue No The MCS-150 was last updated more than two years ago, past FMCSA's two-year update requirement; fleet, driver and cargo figures may be out of date. source
Operation Interstate Interstate, intrastate hazmat or intrastate non-hazmat, as declared on the MCS-150. source
Cargo classes (MCS-150) Chemicals, Liquids / gases, Dry bulk commodities, Drive / tow away Cargo the carrier declared it hauls on its latest MCS-150 (FMCSA's fixed cargo list). source
Driver count 100–499 drivers Total drivers, banded. source
Last MCS-150 update Oct 21, 2025 When the carrier last updated its registration (required at least every two years). source
Doing business as Quest Liner source
USDOT number 1609038 source
MC docket MC-595010 source
Operating authority Active for-hire authority (MC) source
Power units 344 source
Tractors (owned or leased) 344 source
Drivers 239 source
CDL drivers 239 source
Miles reported (MCS-150) 22,006,141 miles source
Mileage year 2024 source
Also hauls its own freight No source
USDOT registered since Feb 20, 2007 source

Source event history

Source dates and first observation are different.

  1. Oct 21, 2025: Filed an MCS-150 update Official source
  2. Feb 20, 2007: Registered with FMCSA Official source

Dates on this record

Source updatedOct 21, 2026 (FMCSA census rows last updated (portal metadata) (the whole dataset, not this record))
CollectedOct 21, 2026, 1:26 PM ET (the last successful check of the source that included this record)
EffectiveFiled an MCS-150 update: Oct 21, 2025; Registered with FMCSA: Feb 20, 2007 (when the source says each fact took effect)
RetiredNot retired: the source is still maintained (whether the dataset is still maintained)

In Iowa

173 hazmat carriers in the dataset are in Iowa; 26 have profiles on this site. Hazmat carriers in Iowa

FMCSA safety rating (all 173 here): Conditional 11 (6%) · Not rated 95 (55%) · Satisfactory 67 (39%)

Rating age (all 173 here): Rating over 10 years old 60 (35%) · Not rated 95 (55%) · Rating 5–10 years old 10 (6%) · Rated within the last 5 years 8 (5%)

Fleet size (all 173 in this group): 10–24 power units (83) · 25–99 power units (60) · 100–499 power units (23) · 500+ power units (7)

Cargo classes (MCS-150) (all 173 in this group; a record can count under several values): General freight (122) · Machinery, large objects (87) · Building materials (84) · Construction (84) · Other cargo (80) · Liquids / gases (76) · 24 other values (706)

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Something wrong or out of date? Suggest a correction. Source record ID 1609038.