Carrier profile · USDOT 2509738 · Updated Jul 18, 2026

Markwest Liberty Gas Gathering Co LLC

DBA MARKWEST ENERGY PARTNERS

1 power unitWASHINGTON, PA50/100

AUTHORITY STATUS UNKNOWN

Operations & Lanes

Where this carrier actually runs, revealed by roadside-inspection geography over the last 24 months — not where they claim to operate, shown as state-level inspection density.

Inspection density by state· each tile = a state · shade = inspections, last 24 mo

Home base

WASHINGTON, PA

800 WESTERN AVE

Density

fewermore

Shade = roadside inspections, last 24 mo.