Dean Tiefenthaler

Doing business as Tiefenthaler Farms

USDOT activeAuthority activeCarrier · Intrastate

USDOT195653
MC197510
LocationLake View, IA
Fleet3 power units · 3 drivers

Dean Tiefenthaler (USDOT 195653, MC-197510) is an intrastate motor carrier based in Lake View, Iowa with 3 power units and 3 drivers reported to FMCSA. Its USDOT number and operating authority are active. FMCSA records list 1 roadside inspection in the last 24 months.

Verification snapshot · FMCSA data as of Nov 11, 2026

Operating authorityActive · MC-197510Motor Carrier of Property Liability insurance$1,000,000 on fileNo federal filing requirement listed Safety ratingNot rated1 inspections in 24 months Out-of-service ordersNone on fileFMCSA out-of-service orders file Registration (MCS-150)Updated Apr 3, 20267 months ago Process agent (BOC-3)On fileProcess Agent Service Company, Inc.

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Operating authority

Status from the FMCSA Company Census File, November 11, 2026

Docket	Authority type	Status
MC-197510	Motor Carrier of Property (except Household Goods)	Active

First granted on March 20, 1987 · see full authority history.

Insurance

FMCSA licensing system (Motus), November 12, 2026

Liability (BIPD) required$0
Liability (BIPD) on file$1,000,000
Cargo insurance required / on fileNo / No
Bond required / on fileNo / No

Filings on file

Type	Insurer	Coverage	Effective
Liability (BIPD) BMC-91X	Great West Casualty Co	$1,000,000	Dec 1, 2015
Cargo BMC-34	Great West Casualty Co	$5,000	May 8, 2008

Insurance history: 10 past filings

Type	Insurer	Effective	Ended	Reason
Liability (BIPD)	Great West Casualty Co.	May 8, 2008	Dec 1, 2015	Replaced
Liability (BIPD)	Great West Casualty Co.	Mar 31, 2008	May 8, 2008	Replaced
Liability (BIPD)	Great West Casualty Co.	Jan 1, 2008	Mar 31, 2008	Replaced
Liability (BIPD)	Great West Casualty Co.	Dec 1, 2007	Jan 1, 2008	Replaced
Cargo	Great West Casualty Co.	Feb 16, 2004	Jun 4, 2008	Term / cancl
Liability (BIPD)	Great West Casualty Co.	Feb 16, 2004	Dec 1, 2007	Replaced
Liability (BIPD)	Acuity, A Mutual Insurance Company	Feb 16, 2000	Feb 16, 2004	Replaced
Cargo	Acuity, A Mutual Insurance Company	Feb 16, 2000	Feb 16, 2004	Replaced
Liability (BIPD)	Continental Western Insurance Co.	Feb 20, 1987	Feb 26, 2000	Cancel
Cargo	Continental Western Insurance Co.	Feb 16, 1987	Feb 26, 2000	Cancel

Process agent (BOC-3)

Process Agent Service Company, Inc., Sioux Falls, SD

Inspections and crashes

Last 24 months · FMCSA Vehicle Inspection File and Crash File

1
Inspections: 100.0%
Driver out-of-service: 0.0%
Vehicle out-of-service: 0
Crashes

Inspected most often in: Iowa (1).

Most recent inspection on file: September 22, 2025.

FMCSA safety rating: Not rated

Inspection and crash counts come from FMCSA records and are shown as reported. They are not a safety rating. A crash record does not mean the carrier was at fault. FMCSA has not rated a carrier unless a safety rating is listed. For FMCSA’s own data and its explanation, see the FMCSA SAFER Company Snapshot.

Out-of-service rates are calculated by CheckTrucking from inspection records (driver: levels I, II, III, VI; vehicle: levels I, II, V, VI). They are not FMCSA scores.

Authority history

FMCSA licensing records (Motus and legacy L&I) · migration-only status adjustments are not shown

May 2, 2008Involuntary revocation — Common carrier authorityDiscontinued revocation on May 9, 2008
March 20, 1987Granted — Common carrier authority; Motor Carrier of Property (except Household Goods)

Fleet and operations

From the company’s own registration (Form MCS-150), updated April 3, 2026

Power units: 3
Trucks: 3
Tractors owned: 3
Drivers: 3
CDL drivers: 3
Interstate drivers: 0
Intrastate drivers: 3
Miles traveled: 40,000 (2025)
Classification: Authorized for hire
Hazardous materials: No
USDOT registered: June 1, 1974
Address: Lake View, IA

Cargo carried

General freight
Grain, feed, hay
Agricultural / farm supplies
Aggregate

Key facts

USDOT number 195653 was registered on June 1, 1974.
Operating authority MC-197510 was first granted on March 20, 1987.
The company last updated its FMCSA registration (Form MCS-150) on April 3, 2026.
It reported 40,000 vehicle miles traveled in 2025.
2 insurance filings are on file, including Liability (BIPD) coverage with Great West Casualty Co.
It had 1 roadside inspection in the last 24 months; 0 inspections recorded no violations.
Its process agent filing (BOC-3) is with Process Agent Service Company, Inc..

Other carriers in Lake View, IA

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