Unofficial site. Not affiliated with FMCSA or USDOT. Data from the public FMCSA Company Census File; always verify on the official FMCSA SAFER.
SOUTHWESTERN MOTOR TRANSPORT INC (DBA SMT LINES) is an active interstate motor carrier based in San Antonio, TX, reporting 277 power units and 252 drivers on its last MCS-150 filing (2026-10-15).
| USDOT Number | 136555 |
|---|---|
| MC/MX Docket | MC80252 |
| MC Docket Status | Active (A) |
| Legal Name | SOUTHWESTERN MOTOR TRANSPORT INC |
| DBA Name | SMT LINES |
| Location | San Antonio, TX |
| Entity Type | Corporation |
| Operation | Interstate |
| Classification | Authorized For Hire |
| Power Units | 277 |
| Trucks | 277 |
| Drivers | 252 |
| CDL Drivers | 225 |
| Hazmat | Yes |
| Reported Mileage | 14460000 (2025) |
| Safety Rating | Satisfactory (2015-11-05) |
| Last MCS-150 Update | 2026-10-15 |
| Added to FMCSA | 1974-06-01 |
| USDOT Status | Active |
MC Docket Status comes from the FMCSA Company Census field docket1_status_code (A = Active, I = Inactive, P = Pending). Empty or missing values show as Not reported. Always confirm on SAFER.
General Freight, Building Materials, Oilfield Equipment, Chemicals, Beverages, Paper Products, Construction
Insurance/authority filing history from the legacy FMCSA L&I system is historical only (records before 2026-05-14). Newer filings made in FMCSA Motus are not included. Verify current insurance on official FMCSA systems.
Verify USDOT 136555 on official FMCSA SAFER →
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