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. 

 

Eastern Alberta 500kV Transmission Line Construction Project

Eastern Alberta 500kV Transmission Line Construction Project

Eastern Alberta 500kV Transmission Line Construction Project

Type: Transmission
Scope: Performed a 100 mile 500kV DC line transmission line construction project.
Location: Alberta, Canada

Client: Alberta Transmission Company

The Eastern Alberta Transmission Line is a 300 mile 500kV overhead transmission line interconnecting the Newell HVDC static inverter plant near Brooks, Alberta with the Heathfield static inverter plant near Gibbons, Alberta.

Owned by ATCO Electric, a subsidiary of Alberta Transmission Company (“ATCO”), the ~$1.3B project further strengthens ATCO’s capability to transmit and distribute electricity to its 227,000+ customers in north and east-central Alberta, the Yukon, and the North West Territories.

Subcontracted via Quanta Services affiliate Valard Construction (Irby and Valard are both Quanta Services subsidiaries (PWR:NYSE)), Irby performed 100 miles of stringing through two sub-zero Canadian winter seasons to energize the project on time and to budget in December 2015.

To learn more about this project, click here.

Start date: August 2013
Completion date: February 2015

 

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

 

Brown-Grady 138kV Transmission Line Rebuild Project

Brown-Grady 138kV Transmission Line Rebuild Project

Brown-Grady 138kV Transmission Line Rebuild Project

Type: Transmission
Scope: Performed a 20.2 mile 138kV transmission line rebuild project.
Location: Big Spring, Texas

Client: Sharyland Utilities

Sharyland Utilities (“Sharyland”) is a Texas-based electric transmission utility providing wholesale energy within the Texas Interconnection (~24 million customers) as regulated by the Electric Reliability Council of Texas. In April 2016, Sharyland contracted Irby to rebuild 20.2 miles of 138kV transmission line near Martin County, West Texas.

As subcontractor to McCord Engineering (Sharyland’s nominated engineering firm), Irby’s scope included the tear-down and reconstruction of the existing 138kV transmission line, including concrete and steel poles, between Grady and Brown Substations. Five OPGW splice cans were installed along the route and construction also included four highway crossings.

The project was completed on time, to schedule, and with zero lost-time incidents in October 2016.

Start Date: April 2016
Completion Date: October 2016

 

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