Carrier profile · USDOT 459217 · MC-191922 · Updated Jun 13, 2026

KNIGHT BROTHERS LLC

DBA INTERMOUNTAIN RIGGING & HEAVYHAUL

83 power unitsSALT LAKE CITY, UT50/100

CARRIER INACTIVEMC-191922 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: Inactive
Broker: Inactive

Insurance & bonds

BIPD / liabilityNo active filing in current snapshot

Cargo filing (census)Recorded per census

Surety bond (census)Not recorded per census

Insurance continuity· insurer · policy · lapses

$1M BIPD last filed ’23 · 13 insurers · 2 lapsesCoverage lapse

Wilshire’92–’97

Continental’97–’04

Zions First’98–’03

Axis Surplus’06–’11

Westchester Fire’11–’19

1992200120102019now

Shorter eras are too brief to label at this scale — all 15 insurers are named in the list below.

No active BIPD filing in FMCSA's current snapshot.

All 15 insurer eras · dates, limits, renewals

Insurer	Period	Limit	Renewals
IMPERIUM INSURANCE COMPANY	Sep 2023 → Oct 2023	$1M	1
NATIONAL INTERSTATE INSURANCE COMPANY	Aug 2023 → Sep 2023	$1M	1
NATIONAL INTERSTATE INSURANCE COMPANY	Jan 2020 → Jan 2020	$1M	3
INDIAN HARBOR INSURANCE COMPANY	Feb 2019 → Feb 2020	$1M	1
WESTCHESTER FIRE INSURANCE COMPANY	Aug 2011 → Feb 2019	$1M	1
NATIONAL INTERSTATE INSURANCE COMPANY	Dec 2006 → Dec 2006	$1M	2
AXIS SURPLUS INSURANCE COMPANY	Aug 2006 → Aug 2011	$1M	2
CLARENDON NATIONAL INS. CO.	Aug 2005 → Dec 2006	$1M	3
ZC INS. CO /CONVERIUM INS.(NA) INC.	Aug 2002 → Aug 2005	$1M	1
UNION INSURANCE CO.	Feb 2002 → Feb 2003	$1M	1
NATIONAL CASUALTY COMPANY	Feb 2002 → Aug 2002	$1M	1
TRANSPORTATION INSURANCE CO.	Feb 1999 → Mar 2002	$1M	2
ZIONS FIRST NATIONAL BANK	Apr 1998 → Dec 2003	$1M	1
CONTINENTAL CASUALTY CO.	Feb 1997 → Mar 2004	$1M	4
WILSHIRE INSURANCE COMPANY	Jun 1992 → Jun 1997	$1M	1