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
Equipment
Haulable capacity (power units only — trailers are towed context), equipment mix, and the VIN-decoded unit roster. Click any VIN to trace that unit across every carrier that has run it.
Capacity· power units = haulable capacity; trailers are towed
- Registered power units (MCS-150)
- 30
- Observed power (24 mo)
- 7
- Trailers (towed)
- 3
Capacity is power units only — trailers are towed equipment and are never summed into a fleet-size figure.
Fleet age· model years · decoded VINs
Average age
2024
Newest model yr
2004
Oldest model yr
30.0%
VINs decoded
Unit roster· VIN-decoded from inspections · NHTSA vPIC
| VIN | Type | Year | Make | Model | Insp. | Last seen |
|---|---|---|---|---|---|---|
| 1XKDP4TX8FJ443842View sourced platform decode | Truck-Tractor | 2015 | KENWORTH | T8 Series | 3 | Dec 9, 2024 |
| 1B9GL5845LS977015View sourced platform decode | Trailer | 2020 | BUCKNER TRAILERS | Buckner Trailers | 3 | Dec 9, 2024 |
| 1NPCLP0X1RD657818View sourced platform decode | Power unit | 2024 | PTRB | — | 2 | Jun 30, 2026 |
| 2NKHLJ0X7LM386127View sourced platform decode | Truck | 2020 | KENWORTH | T3 Series | 2 | Jan 28, 2026 |
| 57JV482DX43573914View sourced platform decode | Trailer | 2004 | FONA | — | 1 | Mar 4, 2026 |
| 1XKZD49X3LJ364662View sourced platform decode | Power unit | 2020 | KW | — | 1 | Mar 4, 2026 |
| 1M2TE4ZC1RM001212View sourced platform decode | Power unit | 2024 | MACK | — | 1 | Sep 30, 2025 |
| 1M2GR4GC7KM007496View sourced platform decode | Power unit | 2019 | MCKT | — | 1 | Aug 11, 2025 |
| 1XKZD49X5LJ364663View sourced platform decode | Power unit | 2020 | KW | — | 1 | May 8, 2025 |
| 57JV482D4R35A1796View sourced platform decode | Trailer | 2024 | FONA | — | 1 | May 8, 2025 |
Showing 10 · most-inspected first.