Carrier profile · USDOT 190744 · Updated Jun 13, 2026
FOUR CORNERS MATERIALS INC
DBA OLD CASTLE SOUTHWEST GROUP INC
120 power unitsDURANGO, CO50/100
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
DURANGO, CO
Density
fewermore