Carrier profile · USDOT 629570 · MC-307123 · Updated Jun 13, 2026
MOUNTAIN ROCK CORP
1 power unitENOCH, UT50/100
CARRIER INACTIVEMC-307123 INACTIVEHAZMATUNDELIVERABLE ADDRESS
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 ’20 · 4 insurers · 1 lapseCoverage lapse
beyond this history
2003200920152021now
Shorter eras are too brief to label at this scale — all 8 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This timeline is the FMCSA filing history, and it ends at the most recent superseded filing — current policy status is not tracked here.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 8 insurer eras · dates, limits, renewals
| Insurer | Period | Limit | Renewals |
|---|---|---|---|
| UNITED FINANCIAL CASUALTY COMPANY | Aug 2018 → Apr 2020 | $750K | 1 |
| EMPLOYERS MUTUAL CASUALTY CO. | Nov 2016 → Jul 2018 | $750K | 1 |
| WILSHIRE INSURANCE COMPANY | Mar 2010 → Jun 2010 | $750K | 1 |
| UNITED FINANCIAL CASUALTY COMPANY | Aug 2009 → Apr 2010 | $750K | 2 |
| PROGRESSIVE CASUALTY INSURANCE COMPANY | Feb 2009 → Aug 2009 | $750K | 2 |
| UNITED FINANCIAL CASUALTY COMPANY | Feb 2009 → Feb 2009 | $750K | 1 |
| PROGRESSIVE CASUALTY INSURANCE COMPANY | Apr 2007 → Feb 2009 | $750K | 3 |
| WILSHIRE INSURANCE COMPANY | Jun 2003 → Apr 2007 | $750K | 6 |