Carrier profile · USDOT 863798 · MC-380022 · Updated Jun 13, 2026
R W and S M Simpson Inc
0 power unitsSPENCER, IA50/100
CARRIER INACTIVEMC-380022 INACTIVEUNDELIVERABLE ADDRESS
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
SPENCER, IA
Density
fewermore