Carrier profile · USDOT 2438567 · MC-841092 · Updated Jun 13, 2026
SANDRA MARTINEZ & DOUGLAS CASTILLO
DBA CASTLE CARRIERS
1 power unitHOUSTON, TX50/100
CARRIER INACTIVEMC-841092 INACTIVE
Authority & Insurance
Active operating authority by type and the full insurance continuity timeline — insurer, policy, coverage, and any lapses — so you can confirm they can legally and adequately haul your load today.
Operating authority· 49 CFR · per type
Operating authority
- Common
- Inactive
- Contract
- None
- Broker
- None
Insurance & bonds
BIPD filing (census)Not recorded per census
Cargo filing (census)Not recorded per census
Surety bond (census)Not recorded per census
Insurance continuity· insurer · policy · lapses
$750K BIPD last filed ’18 · 5 insurers · 1 lapseCoverage lapse
beyond this history
2013201720212025now
Shorter eras are too brief to label at this scale — all 5 insurers are named in the list below.
This timeline is the FMCSA filing history, and it ends at the most recent superseded filing — current policy status is not tracked here. Request a certificate of insurance to confirm active coverage before tendering.
All 5 insurer eras · dates, limits, renewals
| Insurer | Period | Limit | Renewals |
|---|---|---|---|
| PROGRESSIVE COUNTY MUTUAL | Aug 2018 → Dec 2018 | $750K | 1 |
| HALLMARK COUNTY MUTUAL INSURANCE COMPANY | Oct 2016 → Jan 2017 | $750K | 1 |
| UNITED SPECIALTY INSURANCE COMPANY | May 2016 → Oct 2016 | $750K | 1 |
| A-ONE COMMERCIAL INSURANCE RRG, INC | May 2015 → Feb 2016 | $750K | 6 |
| GLOBAL HAWK INSURANCE COMPANY, A RRG | Sep 2013 → May 2015 | $750K | 2 |