Call us: 877-860-5666

ENR Midwest’s 2020 Best Projects

BOLD Transmission Line Project, Indiana

Marion, Ind.
Best Project

Owner: American Electric Power
Lead Design Firm: American Electric Power
General Contractor: Cianbro

The 35-mile project marks the debut of BOLD (Breakthrough Overhead Line Design), an innovative low-profile double-circuit transmission line system designed to maximize power delivery capacity while also minimizing visual impacts. The project replaced a vintage 138-kV, double-circuit line with a double-circuit, 345-kV/138-kV hybrid line without the need for additional right-of-way.

As the BOLD structure design required a different approach from conventional tower construction processes, the project team collaborated with the owner and material manufacturers to review component specifications and develop work packages. To ensure adherence to the owner’s exacting installation standards, the team also spent many hours reviewing, developing and refining quality plans.

This extensive review turned challenges arising from the new tower structures’ curved arm design and compact conductor spacing into opportunities to complete the two-year project below budget and ahead of schedule.

Transporting BOLD tower components using a combination of 48-ft and 25-ft flat-deck trailers substantially reduced the number of staging trips to each location. Tapping expert rigging assistance, the team assembled the unique curved arms using custom-length slings and designated pick points. This process minimized the number of new crane setups, allowing new structures to be set concurrent with removal of existing lattice towers. Changing the sequence of assembling conductor hardware and insulators provided a safer environment for helicopter crews to assist with installing conductor pulling ropes.

Other costs- and labor-saving innovations further expedited the installation process, including establishing a new structure arm tie-down and a method that allowed two conductors to be pulled simultaneously.

Originally published in ENR Midwest, November 10, 2020

NOTE: DDIN Stringing Blocks were used for this project which is why we re-published this article.

Interview with Ryan Lucas of The Powerline Podcast

It doesn’t hurt to have a little bit of a Gypsy Soul Born and raised in a small town in British Columbia, Ryan never dreamed of becoming a lineman even though his father owned a small power line company. It wasn't until a foreman who worked for his father pulled him...

Interview with David Mendonca of The Show Up Dad Podcast

Being a Great Dad, Husband, and Lineman is all about "Be Where Your Feet Are." If you're a lineman – or in the trades – and a father working hard to provide for your family, David Mendonca wants you to know you're not alone. And if you're struggling to be the best...


“Linemen are American heroes.” That’s the central thesis of Alan Drew’s ode to the men and women who energized America. The American Lineman looks like a history book meets a science book, but ultimately, it’s the author's love letter to those who keep the lights on....

Proper Inspection of Grounds and Jumpers

Taking care of your grounds and jumpers A lineman’s ground and jumper cables look and feel like they’re built to last forever, but looks can be deceiving. They get tossed in the truck, dropped in the mud, left hanging in the rain, and generally overlooked. With...

Grab the Right Gear

Keeping the power running to homes, businesses, and hospitals is a 24/7 job. When the power goes out, it’s a lineman who climbs a pole or clambers underground to restore it. Fixing high-voltage lines in freezing rain and blistering heat demands tough lineman tools and...

All The best tools for linemen

Stock up your toolbox


Stringing Transmission Lines

Pole Pulling & Setting

Underground Cable Pulling

Transformer Installation

Pole Climbing

Traffic Zone Safety

Hand Tools

See all the services Tallman Offers

Tool & Equipment Rental

We house a large inventory of the most commonly used equipment for the construction and maintenance of electrical transmission and distribution systems.

Tool & Equipment Repair

We repair virtually any tool we sell!

Ground & Jumper Set Manufacturing

Tallman Equipment has a full-service assembly department skilled in building and repairing custom grounds and jumpers.

Fiberglass testing, repair & Refurbishing

Tallman offers complete repair and reconditioning of your fiberglass tools

Transformer Sling Manufacturing & Rope Repair

Tallman leads the industry in developing and manufacturing transformer slings

Rubber Goods Cleaning & Testing

Tallman Equipment is expanding our services with the development of our new rubber goods testing laboratory.

Share This