Carrier profile · USDOT 44035 · MC-144606 · Updated Sep 6, 2026

Duncan & Son Lines Inc

259 power unitsavg 4.7 yrNational · 21 statesBUCKEYE, AZ88/100
CARRIER ACTIVEMC-144606 ACTIVERATED SATISFACTORYHAZMAT
Verified linksduncantruckingltd.comFMCSA SAFER

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 radiusNational
revealed
States observed20
US states
Inspections · 24 mo422
CA busiest

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

Home base
BUCKEYE, AZ
23860 W US HWY 85
Top corridor
CA ⇄ AZ
CA 238 · AZ 71 · NM 35
Density
fewermore
Shade = roadside inspections, last 24 mo.

State activity ranking· all 20 states · trailing 24 mo

Roadside inspections by state · DUNCAN & SON LINES INC · trailing 24 months
StateCoverageInspections
CACalifornia238
AZArizonaHQ71
NMNew Mexico35
TXTexas20
ARArkansas12
OKOklahoma8
TNTennessee6
NVNevada6
COColorado5
WAWashington4
IAIowa3
MOMissouri3
UTUtah3
KYKentucky2
WYWyoming1
LALouisiana1
GAGeorgia1
IDIdaho1
SDSouth Dakota1
NENebraska1