Entergy Texas (an Entergy Corporation subsidiary) provides power to over 450,000 customers in 27 Texas counties. In September 2015, Entergy contracted Irby affiliate company Dashiell Engineering (Irby and Dashiell are Quanta Services subsidiary companies (PWR:NYSE)) to construct 40 miles of 230kV transmission line including steel and concrete poles between Entergy’s Ponderosa and Grimes substations in southeast Texas.

Irby Construction contracted Auger Services to construct the foundations and Winco (also a Quanta Services subsidiary company) to pull lead line and help clip the shield wire via helicopter.

This project was successfully completed in April 2016.

Start Date: September 2015
Completion Date: April 2016

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Entergy Louisiana (an Entergy Corporation subsidiary) is a power provider serving over 1 million customers across 58 parishes in Louisiana. In October 2016, Entergy contracted Dashiell Engineering (a Quanta Services company (PWR:NYSE)) to reconstruct 15 miles of 230kV and 6.8 miles of 500kV transmission line near Lake Charles on a turn-key basis.

Irby (also a Quanta Services company) was subcontracted to Dashiell to rebuild the lines, including foundations, steel, and concrete poles. Irby was assisted by Auger Services for pole setting/foundations and WInco for helicopter wire operations. Irby also performed conductor stringing works (1 mile) across the Calcasieu River. The project was completed in February 2018 to schedule and without lost-time incident.

Start Date: October 2016
Completion Date: February 2018

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In April 2016, Irby Construction was awarded the contract for the construction of the Valliant to Northwest Texarkana Transmission Line project for AEP Southwestern Electric Power Company and AEP Oklahoma Transmission Company.

The project consisted of the installation of 43.5 miles of 345kV single steel pole transmission line on anchor-bolted foundations. Irby was supported by Erickson Air Crane and Winco for helicopter pole erection work scopes (Irby and Winco are Quanta Services subsidiary companies (PWR:NYSE)). The project was completed on time and with zero lost time incidents in January 2017.

Start Date: April 2016
Completion Date: January 2017

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In 2013, Georgia Transmission Corporation (“GTC”) contracted Irby to construct a 12.2 mile 115kv transmission line south of Savannah, Georgia including a 4 mile section through a protected salt marsh.

In service of the Coastal Electric Cooperatives service area, the project connected two radial transmission systems (Burnt Church and Tradeport) in Bryan and Liberty counties. In observance of the projects environmental sensitivity, Irby adapted a construction solution whereby poles were set by an Erikson S-64 Aircrane helicopter to minimize the impact to marshland ecosystems.

Completed on time and within strict environmental parameters, the project exemplified Irby’s capability to plan and execute novel technical solutions to the highest standards of environmental best practice.

To see more on this project, watch the project video produced by Georgia Transmission.

Start Date: April 2013
Completion Date: December 2013

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