Carrier profile · USDOT 1511513 · Updated Jun 13, 2026
STEWART BUILDERS INC
DBA KEYSTONE CONCRETE
30 power unitsavg 7 yrLocal · 1 statesHOUSTON, TX74/100
AUTHORITY STATUS UNKNOWN
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
- 23000 NW LAKE DRIVE, HOUSTON, TX, 77095-5344
- Operation
- Intrastate (Non-Hazmat)
Contact
- Phone
- (713) 983-8002
- Cell
- (281) 932-5549
- Fax
- (713) 983-8845
- Web domain
- keystoneconcrete.com
Registration
- Officers
- Mark Stewart · Bradley Stewart
- USDOT / docket
- 1511513
- First registered
- Jun 7, 2006
- Last MCS-150
- Mar 28, 2025 · 241,334 mi (2024)
- FMCSA safety rating
- Not rated
- Recordable crash rate
- 0.00
- D-U-N-S
- —
Fleet (self-reported · MCS-150)
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.