S B COX READY MIX INC
ROCKVILLE, VA
03/16/2012
84
Power Units
56
Drivers
Current
as of today
Active · 84 power units · 56 drivers · Rockville, VA
2026
Jan 7, 2026
MCS-150 biennial update filed
Reported mileage: 1,143,658 (2024)
Reported power units: 84
Reported drivers: 56
Reported trailers: 12
2025
Dec 10, 2025
MCS-150 biennial update filed
Reported mileage: 1,143,658 (2024)
Reported power units: 84
Reported drivers: 56
Reported trailers: 12
2024
~Nov 2024
Email changed
ceaston@coxreadymix.com → rknack@coxreadymix.com
Aug 12, 2024
MCS-150 biennial update filed
Reported mileage: 801,479 (2019)
Reported power units: 85 → 84
Reported drivers: 55 → 56
Reported trailers: 12
2022
Aug 5, 2022
MCS-150 biennial update filed
Reported mileage: 801,479 (2019)
Reported power units: 72 → 85
Reported drivers: 65 → 55
2020
May 4, 2020
MCS-150 biennial update filed
Reported mileage: 801,479 (2019)
Reported power units: 72
Reported drivers: 65
2012
Mar 16, 2012
DOT registered
Company registered with the FMCSA.