Carrier profile · USDOT 1027249 · MC-431682 · Updated Jun 13, 2026
BIG SKY BUS LINES INC
0 power unitsLocal · 1 statesBLACK EAGLE, MT94/100
CARRIER ACTIVEMC-431682 ACTIVERATED SATISFACTORY
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
- Active
- Contract
- None
- Broker
- None
Insurance & bonds
BIPD / liability$5,000,000 in force
Cargo filing (census)Not recorded per census
Surety bond (census)Not recorded per census
Insurance adequacy· filed BIPD vs the $750K federal floor
$5M in forcegeneral-freight federal minimum
$750K floor
Insurance continuity· insurer · policy · lapses
$5M BIPD last filed ’25 · 8 insurers · 0 lapsesInsurer churn
National Interstate’10–’19
2002200820142020now
Shorter eras are too brief to label at this scale — all 11 insurers are named in the list below.
BIPD in force — $5,000,000 · NEW YORK MARINE & GENERAL INS. CO. · since Jul 2025
All 11 insurer eras · dates, limits, renewals
| Insurer | Period | Limit | Renewals |
|---|---|---|---|
| NEW YORK MARINE & GENERAL INS. CO. | Jul 2024 → Jul 2025 | $5M | 1 |
| NATIONWIDE MUTUAL INSURANCE COMP | Dec 2020 → Jul 2024 | $5M | 2 |
| PHILADELPHIA INDEMNITY INSURANCE COMPANY | Dec 2018 → Jan 2021 | $5M | 5 |
| NATIONAL INTERSTATE INSURANCE COMPANY | Oct 2010 → Jan 2019 | $5M | 2 |
| RLI INSURANCE COMPANY | Oct 2009 → Dec 2010 | $5M | 2 |
| AMERICAN ALTERNATIVE INSURANCE CORPORATION | Oct 2008 → Nov 2009 | $5M | 3 |
| NATIONAL INTERSTATE INSURANCE COMPANY | Mar 2008 → Oct 2008 | $5M | 1 |
| RLI INSURANCE COMPANY | Oct 2005 → Nov 2007 | $5M | 1 |
| AMERICAN ALTERNATIVE INSURANCE CORPORATION | Apr 2004 → Nov 2005 | $5M | 2 |
| AMERICAN SOUTHERN INSURANCE CO. | Apr 2004 → Oct 2005 | $5M | 1 |
| FAIRMONT INSURANCE COMPANY | May 2002 → Apr 2004 | $5M | 3 |