Carrier profile · USDOT 616131 · Updated Jun 13, 2026

TETRA TECH INC

6 power unitsRegional · 7 statesPASADENA, CA80/100
AUTHORITY STATUS UNKNOWN
Verified linkstetratech.comFMCSA SAFERCallEmail

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 observed7
US states
Inspections · 24 mo8
IA busiest

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

Home base
PASADENA, CA
3475 E FOOTHILL BLVD
Top corridor
IA ⇄ CA
IA 2 · NY 1 · WV 1
Density
fewermore
Shade = roadside inspections, last 24 mo.

State activity ranking· all 7 states · trailing 24 mo

Roadside inspections by state · TETRA TECH INC · trailing 24 months
StateCoverageInspections
IAIowa2
NYNew York1
WVWest Virginia1
CACaliforniaHQ1
WYWyoming1
VAVirginia1
RIRhode Island1