BILL POLKINHORN, INCORPORATED

DBA: GOLDEN WEST TRANSPORT

DOT# 506308 MC# 258822CARRIER

ACTIVE

Trust Score

96 / 100

A Excellent

Components

Compliance · 40% 100

Safety · 35% 100

Insurance · 25% 85

No active cargo insurance on file

Confidence: high · based on FMCSA safety, insurance & authority data How is this calculated?

Overview

Address

Physical

2401 PORTICO BLVD

CALEXICO, CA 92231

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Mailing

PO BOX 1508

CALEXICO, CA 92232

Contact

Phone: (760) 890-8721

Fax: (760) 357-0380

Cell: (760) 357-1146

Email: bill.polkinhorn@polkinhorn.us

Company Officers

WILLIAM POLKINHORN

RAYMUNDO MANCILLAS

Business Info

Organization: CORPORATION

D&B #: 43652213

Fleet

Power Units

Drivers

Equipment Breakdown

Owned Tractors12

Authority

Status: ACTIVE

FMCSA add date: Dec 7, 1992

MCS-150

Last updated: Feb 25, 2026

Mileage: 500,000 (2025)

Operation Classification

AUTHORIZED FOR HIRE

Carrier Operation

Interstate

Related Companies

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GOLDEN WEST TRANSPORT SA DE CV	1053668	—	MEXICALI, BN	ACTIVE	MailingOfficerPhone
SERVICIOS Y TRANSPORTES ATLAS SA DE CV	880332	—	MEXICALI, BN	ACTIVE	MailingOfficerPhone
ALONZO MIRAMONTES DBA: NORTHWESTERN TRUCKING	2110918	735949	CALEXICO, CA	INACTIVE	Address
OSCAR SOLANO RAMOS	554889	—	CALEXICO, CA	ACTIVE	Address
TRANSPORTES GWT, S.A. DE C.V.	701579	—	CALEXICO, CA	INACTIVE	Address

Safety

Out-of-Service Rates

Driver243 inspections

0.4%

6.0%

Carrier National avg

Vehicle153 inspections

15.0%

22.6%

Carrier National avg

Hazmat6 inspections

0.0%

2.3%

Carrier National avg

Crash Summary

Fatal

Injury

Towaway

Total

BASIC Violations

Unsafe Driving19

Driver Fitness4

Hours of Service5

Drug / Alcohol0

Vehicle Maintenance124

Insurance

$1,000,000

BIPD Coverage

—

Cargo Coverage

1 policy on file1 active

Type	Status	Insurer	Policy #	Coverage	Effective	Expires	Form
BIPD	Active	QUALITAS INSURANCE COMPANY	QCA-62824-07	$1,000,000	Sep 23, 2025	—	91X

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