Harwood-Waelder 69kV Transmission Line Upgrade Project

Harwood-Waelder 69kV Transmission Line Upgrade Project

Harwood-Waelder 69kV Transmission Line Upgrade Project

Type: Transmission
Scope: Constructed 13.9 miles of 69kV energized transmission line and conductor upgrade.​
Location: Hardwood, Texas
Client: Lower Colorado River Authority

The Lower Colorado River Authority (“LCRA”) is a nonprofit public utility established to provide quality of life to Texans through water stewardship, energy, and community service.

In November 2017, LCRA contracted Irby to upgrade a 13.9 mile 69kV transmission line between its Harwood and Waelder substations to 138kV capable. The Irby scope included the replacement of 112 structures to complete the conductor upgrade and the installation of OPGW shield wire from Waelder to Flatonia substations.

The Irby upgrades (including foundations, tangents, and dead ends) were performed on energized lines with support from Quanta Energized Services and Probst Electric Company (Both Irby and Probst are Quanta Services companies (PWR:NYSE)). Completed to schedule in May 2018, the project was delivered to budget and with zero lost time incidents.

Start Date: November 2017
Completion Date: May 2018

 

If you would like to request information on this project or submit a request for bid, click here. 

 

Corbett-Sugar-Quarry 500kV Transmission Line Construction Project

Corbett-Sugar-Quarry 500kV Transmission Line Construction Project

Corbett-Sugar-Quarry 500kV Transmission Line Construction Project

Type: Transmission
Scope: Constructed 68.3 miles of 500kV transmission line including 15 miles of construction through Everglade canal waterways.
Location: South East Florida

Client: NextEra Energy Resources

NextEra Energy Resources (a parent company of FPL) is a wholesale electricity supplier with a portfolio of facilities totaling more than 21,000MW of electric generating capacity in the United States and Canada. In January 2018, NextEra contracted Irby to construct 68.3 miles of 500kV transmission line (single circuit, triple bundled) between Palm Beach and Miami-Dade counties (Corbett and Sugar substations to Quarry substation) in support of a critical tie-in for the NextEra’s Florida grid.

The Irby scope includes site survey, clearing, construction of access roads and pads, pier foundations and anchor pile installation, and setting steel structure and deadends with approximately 15 miles of the construction right of way transversing protected Everglade canal waterways.

In observance of the projects environmental requirements Irby crews adapted novel technical solutions including the use of barges, concrete pump lines, and amphibious equipment.

Start Date: January 2018
Completion Date: May 2019

 

If you would like to request information on this project or submit a request for bid, click here. 

 

Palo Verde-Pinal West 500kV Transmission Line Construction Project

Palo Verde-Pinal West 500kV Transmission Line Construction Project

Palo Verde-Pinal West 500kV Transmission Line Construction Project

Type: Transmission
Scope: Constructed 52.4 miles of 500kV transmission line.
Location: Phoenix, Arizona
Client: Salt River Project

Irby was contracted by the Salt River Project Agricultural Improvement and Power District (“SRP”) to construct the Palo Verde to Pinal West 500kV transmission line in March of 2007. Serving six utility districts including the Salt River Project, this line consisted of 52.4 miles of single circuit triple bundle conductor (up to 1,400 MW capacity) on approximately 205 self-supporting lattice steel towers.

Foundation work for the project was performed by fellow Quanta Services subsidiary company Can-Fer Construction, and the helicopter leadline was performed by Air2, LLC. The project was successfully delivered in May of 2008.

Start Date: March 2007
Completion Date: May 2008

 

If you would like to request information on this project or submit a request for bid, click here. 

 

Mead-Phoenix 500kV Transmission Line Construction Project

Mead-Phoenix 500kV Transmission Line Construction Project

Mead-Phoenix 500kV Transmission Line Construction Project

Type: Transmission
Scope: Constructed 256 miles of 500kV transmission line including 956 towers.
Location: Phoenix, Arizona
Client: Salt River Project

The Salt River Project Agricultural Improvement and Power District (“SRP”) is an Arizona state public electrical utility serving the Phoenix metropolitan area.

In January 1994, SRP contracted Irby to construct 256 miles of 500kV transmission line including 956 towers between Mead and Phoenix. Running parallel to the pre-existing Mead-Liberty 345kV line, the project incorporated the first application of a 500kV phase shifting transformer enabling 1300MW transmission capacity up to 2200 MW to Southern Nevada. The project was successfully delivered to SRP in September of 1995.

Start Date: January 1994
Completion Date: September 1995

 

If you would like to request information on this project or submit a request for bid, click here. 

 

Marshall Ford-Lago Vista 138kV Transmission Line Construction Project

Marshall Ford-Lago Vista 138kV Transmission Line Construction Project

Marshall Ford-Lago Vista 138kV Transmission Line Construction Project

Type: Transmission, Water Crossing
Scope: Performed a 14.5 mile 138kV transmission line upgrade including a 1.3 mile crossing over Lake Travis.
Location: Austin, Texas

Client: Lower Colorado River Authority

In March 2016, Irby Construction was contracted by the Lower Colorado River Authority (“LCRA”) to perform the Marshall Ford to Lago Vista 138kV Transmission Line Construction Project. The project scope included the replacement of a 1.3 mile transmission line across Lake Travis plus the upgrade of an existing 14.5 mile transmission line (69kV to 138kV).

Irby Construction successfully completed this project in April of 2016 to schedule and budget.

To learn more about this project, click here.

Start Date: March 2016
Completion Date: April 2016

 

If you would like to request information on this project or submit a request for bid, click here.