Carrier profile · USDOT 44035 · MC-144606 · Updated Jun 13, 2026

DUNCAN & SON LINES INC

259 power unitsavg 4.7 yrNational · 20 statesBUCKEYE, AZ88/100

CARRIER ACTIVEMC-144606 ACTIVERATED SATISFACTORYHAZMAT

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: Active
Broker: Inactive

Insurance & bonds

BIPD / liability$1,000,000 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

$1M in forcegeneral-freight federal minimum

$750K floor

Filed BIPD coverage of $1M meets or exceeds the $750K federal minimum for general freight (49 CFR 387.9). Some commodities (hazmat, larger vehicles) require $1M–$5M — confirm against your load.

Insurance continuity· insurer · policy · lapses

$750K BIPD last filed ’21 · 4 insurers · 1 lapseCoverage lapse

Great West’90–’95

Wilshire’95–’03

National Interstate’11–now

1990199920082017now

Shorter eras are too brief to label at this scale — all 5 insurers are named in the list below.

BIPD in force — $1,000,000 · NATIONAL INTERSTATE INSURANCE COMPANY · since Sep 2021

All 5 insurer eras · dates, limits, renewals

Insurer	Period	Limit	Renewals
NATIONAL INTERSTATE INSURANCE COMPANY	Jan 2011 → Sep 2021	$750K	5
NATIONAL INTERSTATE INSURANCE COMPANY	Sep 2006 → Sep 2006	$750K	2
CANAL INSURANCE CO.	Sep 2003 → Sep 2006	$750K	7
WILSHIRE INSURANCE COMPANY	Sep 1995 → Sep 2003	$750K	2
GREAT WEST CASUALTY CO.	Sep 1990 → Sep 1995	$750K	1