Carrier profile · USDOT 4151788 · Updated Jul 18, 2026

Markwest Energy Operating Company LLC

DBA MPLX G&P

122 power unitsavg 6.6 yrRegional · 3 statesDENVER, CO96/100
AUTHORITY STATUS UNKNOWN
Verified linksmarathonpetroleum.comFMCSA SAFER

Authority & Insurance

Active operating authority by type and the full insurance continuity timeline — insurer, policy, coverage, and any lapses — so you can confirm they can legally and adequately haul your load today.

Insurance continuity· insurer · policy · lapses

No insurance filing history on record.

This timeline is the FMCSA filing history, and it ends at the most recent superseded filing — current policy status is not tracked here. Request a certificate of insurance to confirm active coverage before tendering.