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About Us

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Irby's combination of training and experience translates into a history of job performance in everything from safety practices to crew productivity and timely project completion. The company's financial strength and readily available manpower and equipment allow it to compete successfully for projects of any size or type. With the support of our parent company, Quanta Services, and its affiliates, Irby can handle projects of virtually any scope.

Irby Construction Company has the ability to work in all types of climate, terrain, and environments, from highly populated areas to remote locations. Irby also has experience working in a variety of international settings. Irby's expertise extends to all phases of power line construction, uniquely qualifying Irby to meet all your construction needs.

While Irby is well-known for completing its projects ahead of schedule, its commitment to safety and quality is top priority.

Irby Construction participates in a variety of business arrangements, including turnkey design and construction projects and joint ventures. This flexibility allows us to offer customers the highest quality construction and the best value -- an unbeatable combination


From an 11-mile, 22 kV transmission line built in 1917, Irby Construction Company has grown to become a leader in all phases of power line construction, including Extra High Voltage (EHV), transmission and distribution systems, substations, maintenance and emergency restoration.

In 1919, Stuart C. Irby founded Stuart C. Irby Company which specialized in wholesale electrical supplies and electrical contracting. It started in the electric contracing business by erecting power lines for rural and municipal electric systems throughout the Southeast. In fact, Irby has erected more Rural Electrification Administration power lines than any other company in the United States.

In 1946, Irby Construction Company was chartered as a separate organization headed by Stuart C. Irby, Jr., son of the founder. Under his leadership, the company's growth continued, extending abroad for the first time in 1957 in Liberia, Africa.  By 1965, Irby Construction Company had successfully constructed projects in 36 states, and by 1966, it had constructed more REA projects than any other contractor in the country.  In 1966, Irby utilized helicopters for the first time to assist in powerline construction.  In 1967, Irby constructed the first 765kV project in the U.S.  Irby also, constructed transmission, distribution, and substations in Java, Indonesia, from 1975 until completion in 1981.  In 1977, Irby constructed a 112-mile, 400kV transmission line project in South Africa.  In 1986, Irby constructed 98 miles of 345 kV transmission in the environmentally sensitive Alaskan wilderness.  A leader in safety, Irby established a lineman apprenticeship program in 1987 and received certification from the U.S. Department of Labor in 1993.  In 1996, Irby constructed the first transmisssion line in Belize, Central America.ia, from

Recognized as a leader in EHV power line construction and having built the first 765 kV transmission line in the United States, Irby continues to lead in this field as well as all phases of power line construction.  Large international work was a hallmark of the 1970s, and steady growth throughout the country has continued to mark the last several decades.

Today, Irby Construction Company is part of the Quanta Services, Inc. family of companies — more than ever before we are able to offer many services to our customers.


As an innovator in the introduction of Total Quality Management to the electrical construction industry, Irby Construction Company involves employees in problem solving and decision making in every aspect of its business.

From functional teams on steel erection crews to cross-functional teams focusing on improving equipment maintenance, we use problem solving procedure along with tools and techniques such as control charts and brainstorming to arrive at innovative solutions.

As each team implements improvements in cost-savings, safety, and quality, we strive to fulfill the mission of Irby Construction Company:

"To provide the highest quality construction of electrical transmission and distribution systems at competitive prices, maintain integrity in all our dealings, recognize and meet legitimate needs of customers, employees, shareholders and community. "


Irby Construction Company's vast equipment fleet does the job in drifting Rocky Mountain snows or blistering desert heat, in sub-zero Alaskan tundra, sweltering Southern swamps and Western deserts, and in challenging off-continent projects in locations such as Liberia, South Africa, Indonesia and Belize.

Irby has established a strict set of standards regarding equipment design, use, and maintenance. These standards promote safety efficiency, effectiveness, and production.

In order to keep these units in top working condition and to ensure their maximum working life, they must be serviced on a regular schedule. Through a state-of-the-art equipment management system, each unit is set up with appropriate GPS metering equipment where use, speed, location, maintenance and DOT inspections can be tracked, reported and managed.

With a state-of-the-art equipment operations facility located at its corporate headquarters and through equipment purchases, leasing, training, and preventative maintenance programs, Irby strives for the most efficient and productive use of equipment. This commitment helps us meet the ever-changing needs of our customers by supplying the most versatile and cost-effective equipment fleet in the industry.

People & Leadership

Irby Construction Company's extraordinary record of success can be attributed to our people whom are among the most respected, experienced and talented in the industry. Irby's corporate headquarters is located in Central Mississippi. Employees include local management and support personnel as well as construction crews who live on project sites worldwide.

With a combined experience of over 250 years in the power line construction industry, Irby's management is indicative of employee loyalty to the company and the knowledge brought to all interaction with Irby's customers.

Irby field management and construction personnel are also loyal, dedicated, talented, well-trained and experienced men and women who live in various project locations throughout the United States and are the foundation of the company. Irby crews are supplemented by employees locally selected and trained who often choose to become permanent members of the Irby team.

Management Team:

Bill Korlath, President
Robert A. Croft, Sr. Executive Vice President and Chief Financial Officer
John Hopper, Chief Operating Officer
Charles Gatewood, Senior Vice President of Operations
Doug Blake, Vice President of Operations
Margaret Rushing, Vice President of Accounting and Controller
Scott Argyle, Vice President of Equipment Operations
Andre Foster, Executive Director of Business Development
Greg Berry, Managing Director of Safety and Training
Kevin A. Croft, Managing Director of Risk and Contracts
Jenner Collins, Director of Information Systems
Amanda Lott, Manager of Human Resources and Employee Development
Pat McBride, Director of Special Projects and Recruiting
Pete Tomlinson, Director of Operations
Bonnie Burnham, Director of Operations
Randy Berry, Managing Director Bidding / Director of Operations
Brad Davis, Director of Operations
Gary Wiggs, Director of Equipment Operations