MARKWEST ENERGY OPERATING COMPANY LLC

USDOT 4151788 · Denver, CO · Underwriter-grade risk snapshot

Operating statusActive

Lead priorityUnknown

Fleet155 power units · 146 drivers (155 trucks)

OperationA · PRIVATE PROPERTY

Current insurer—

Crashes / Inspections (24 mo)0 / 9

	Vehicle	Driver
This carrier	11.1% (1/9)	0.0% (0/9)
National average	22.3%	6.7%

✓ At or below national average.

Address1515 ARAPAHOE ST STE 1-600
DENVER CO 80202-2137

DBAMPLX G&P

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Power units155

Drivers146 (0 CDL)

MCS-150 mileage100 (2023)

MCS-150 filedDec 28, 2023

HazmatN

Cargoother: tools, pipes, pumps, general freight

Total inspections9

Out-of-service1

Vehicle OOS rate11.1%

Driver OOS rate0.0%

Total violations2

OOS violations0

Total crashes0

Fatal crashes0

Injuries0

Insurance agent? MARKWEST ENERGY OPERATING COMPANY LLC — get the full CO lead list.

Data as of Thu Oct 15 2026 00:00:00 GMT+0000 (Coordinated Universal Time). Source: FMCSA public filings, refreshed daily by Insight Carrier.