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Project Detail

Aviation Marker Ball Installation on Big Eddy-Knight 500kV Transmission Line

Location: Oregon

Description: Sturgeon Electric installed 23 aviation marker balls and associated hardware atop Bonneville Power Administration’s (BPA) Big Eddy-Knight 500kV transmission line, which crosses the Columbia River Gorge near The Dalles, Oregon. It was the first time the federal nonprofit agency allowed a transmission line contractor to use (Class B) Human External Cargo (HEC) helicopter methods, which includes flying line workers below a helicopter in an “air chair.”

Completion Date: 2016

Work Performed By: Sturgeon Electric Company, Inc., a subsidiary of MYR Group

Client: Bonneville Power Administration (BPA)

Read more: Sturgeon Electric Leaves its Mark Installing Marker Balls for the Bonneville Power Administration

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