Carrier profile · USDOT 60587 · Updated Aug 2, 2026

Columbia Gas Transmission Corporation

DBA COLUMBIA GAS TRANSMISSION LLC

468 power unitsavg 9.2 yrRegional · 6 statesHOUSTON, TX100/100
AUTHORITY STATUS UNKNOWNRATED SATISFACTORYHAZMAT
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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.

Operating footprint· revealed by roadside-inspection geography

Operating radiusRegional
revealed
States observed6
US states
Inspections · 24 mo20
WV busiest

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

Home base
HOUSTON, TX
700 LOUISIANA STEET STE 700
Top corridor
WV ⇄ TX
WV 10 · OH 3 · PA 2
Density
fewermore
Shade = roadside inspections, last 24 mo.

State activity ranking· all 6 states · trailing 24 mo

Roadside inspections by state · COLUMBIA GAS TRANSMISSION CORPORATION · trailing 24 months
StateCoverageInspections
WVWest Virginia10
OHOhio3
PAPennsylvania2
MDMaryland2
TNTennessee2
MSMississippi1