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
Verified linksFMCSA SAFER

Identity & Federal

The official FMCSA identity — legal name, DBA, addresses, contact, officers, and registration — alongside the daily-captured federal-record activity feed, monitored daily by Vektor.

Location

Physical address
25825 HWY 160, DURANGO, CO, 81301
Mailing address
PO BX 2707, DURANGO, CO, 81301
Operation
Interstate

Contact

Phone
(970) 247-2172
Fax
(970) 259-3631
Email
—

Registration

USDOT / docket
190744
First registered
Jun 1, 1974
Last MCS-150
Oct 8, 2001 · 1,766,345 mi (1999)
FMCSA safety rating
Not rated
D-U-N-S
44718849

Fleet (self-reported · MCS-150)

120Power units
131Drivers
131CDL drivers
1,766,345Annual mileage

MCS-150 filing history· biennial-update cadence

Per-filing MCS-150 history (each biennial update + the fleet/mileage it reported) is being captured from the daily federal feed and will appear here as we capture the full history.

Federal record activity· monitored daily by Vektor

No licensing or insurance changes captured since Vektor began monitoring this carrier (June 2026). Quiet is usually good.