Carrier profile · USDOT 4151788 ·

Markwest Energy Operating Company LLC

DBA MPLX G&P

155 power unitsavg 6.6 yrLocal · 2 statesDENVER, CO100/100
AUTHORITY STATUS UNKNOWN
Verified linksFMCSA SAFER
Observed fleet · trailing 24 mo daily
155Power units
4 observed · MCS-150
3Trailers seen
Decoded · vPIC
6.6Avg age (yr)
2014–2022 · vPIC

Load decision ·

Clear to load

Active authority and a clean federal record. No blocking issues found.

Vektor intelligence · beyond the federal recordProprietary signals computed from VIN-decoded inspections & daily FMCSA snapshots
Fleet typeIdentity

Small fleet

155 power units. Brokers price each fleet type apart.

Fleet age vs peersTypical

6.6 yr

Model years 2014–2022 · peer benchmark unavailable.

Identity stabilityStable

3 yr unchanged

Same registration since 2023 — no chameleon / reincarnation signal.

Cross-border activity

No border inspections on record

A named inspection location does not confirm a border transit or operating authority. Counts cover retained inspection records.

Safety and violations

Violation data is not available for this carrier right now.

Verification summaryAuthority, insurance, safety and identity facts for MARKWEST ENERGY OPERATING COMPANY LLC.

MARKWEST ENERGY OPERATING COMPANY LLC (USDOT 4151788) has a Vektor safety score of 100/100 and a Clear to load verdict, from the carrier's FMCSA record. FMCSA profile data as of Nov 3, 2026.

The carrier has an unknown current for-hire authority status because no FMCSA L&I authority row is available. FMCSA authority data as of Nov 7, 2026.

It has an unknown current BIPD insurance status because no FMCSA L&I active-filing snapshot is available. FMCSA insurance data as of Nov 3, 2026.

Its vehicle out-of-service rate was 16.7% over the last 24 months, versus the 22.26% CVSA national average, from FMCSA roadside-inspection data. FMCSA safety data as of Nov 7, 2026.

The carrier received 7 roadside inspections in the last 24 months — 6 vehicle-level and 7 driver-level — across 2 states, according to FMCSA roadside-inspection data. FMCSA operations data as of Nov 7, 2026.

The carrier has 0 reportable crashes in the last 24 months and 0 fatal crashes across the full FMCSA crash record available. FMCSA safety data as of Nov 7, 2026.

It reports 155 power units and 146 drivers in its most recent MCS-150 filing dated Nov 4, 2026. FMCSA identity data as of Nov 7, 2026.

It has no FMCSA-assigned safety rating in the federal record. FMCSA identity data as of Nov 7, 2026.

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Frequently asked

What is MARKWEST ENERGY OPERATING COMPANY LLC's USDOT number?

MARKWEST ENERGY OPERATING COMPANY LLC's USDOT number is 4151788.

Is MARKWEST ENERGY OPERATING COMPANY LLC authorized to operate?

FMCSA authority data as of Nov 7, 2026. MARKWEST ENERGY OPERATING COMPANY LLC is active in the FMCSA register.

What is MARKWEST ENERGY OPERATING COMPANY LLC's safety record?

MARKWEST ENERGY OPERATING COMPANY LLC has a 16.7% vehicle out-of-service rate (national average 22.26%) across 12 roadside inspections, with 0 reportable crashes in the last 24 months, and is not currently rated by FMCSA. Vektor's computed risk score is 100/100 (tier: clear).

How big is MARKWEST ENERGY OPERATING COMPANY LLC's fleet?

MARKWEST ENERGY OPERATING COMPANY LLC operates 155 power units and 146 drivers per its most recent MCS-150 filing.

Where is MARKWEST ENERGY OPERATING COMPANY LLC based?

MARKWEST ENERGY OPERATING COMPANY LLC is based in DENVER, CO, with roadside inspections recorded across 2 states.

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