MARKWEST ENERGY OPERATING COMPANY LLC
DBA: MPLX G&P
Operations
Safety profile
FMCSA BASIC percentiles, inspection history, and out-of-service rates.
Full safety report
All 7 FMCSA BASIC percentiles, recent inspection records, vehicle & driver out-of-service rates — free with any account.
Crash history
State-reportable crashes, severity breakdown, and time-decayed analysis.
Crash history
Individual crash records with date, severity (fatal / injury / tow-away), and fleet-normalized rate.
Insurance & compliance
Active policy coverage, insurance carrier, effective dates, and historical gaps.
Insurance details
BI&PD coverage, cargo insurance, insurance carrier name, effective dates — a critical pre-booking check.
Authority & cross-reference
Authority revocation history and chameleon carrier detection across 4.4M records.
Authority & cross-reference
Every authority grant, revocation, and reinstatement — plus chameleon flags from address / officer / phone matches.
Frequently asked questions about MARKWEST ENERGY OPERATING COMPANY LLC
Common questions about this carrier, answered from FMCSA public records.
Is MARKWEST ENERGY OPERATING COMPANY LLC a legitimate motor carrier?
MARKWEST ENERGY OPERATING COMPANY LLC is registered with FMCSA under USDOT number 4151788. Operating authority status is currently Active. Carrier90's trust score of 74/100 yields a REVIEW verdict based on safety, insurance, authority, and crash data.
What is MARKWEST ENERGY OPERATING COMPANY LLC's safety score?
Carrier90 scores MARKWEST ENERGY OPERATING COMPANY LLC at 74 out of 100 with a REVIEW verdict. The score combines FMCSA BASIC percentiles, crash history, insurance status, operating authority, and chameleon carrier detection signals.
Where is MARKWEST ENERGY OPERATING COMPANY LLC based?
MARKWEST ENERGY OPERATING COMPANY LLC lists its physical address in DENVER, CO in FMCSA records. The physical state and city fields are provided by the carrier on their MCS-150 form.
Is USDOT 4151788 active?
USDOT 4151788 (MARKWEST ENERGY OPERATING COMPANY LLC) operating authority status is currently Active. Last verified by Carrier90 on June 3, 2026. Data is sourced from live FMCSA federal records.
How many trucks does MARKWEST ENERGY OPERATING COMPANY LLC operate?
MARKWEST ENERGY OPERATING COMPANY LLC reports 122 power units and employs 135 drivers to FMCSA. These figures come from the carrier's most recent MCS-150 filing.
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