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Project Detail

John Day to Big Eddy 500kV Deschutes River Crossing

John-Day-to-Big-Eddy-04           John-Day-to-Big-Eddy-03      John-Day-to-Big-Eddy-02

Location: Oregon

Description:  Bonneville Power Administration (BPA) selected Hawkeye Construction, a subsidiary of MYR Group, to replace a portion of 500kV conductor that spanned 4100’ across the Deschutes River, near the Columbia River Gorge in south central Oregon. Hawkeye also replaced an additional two miles of conductor – one mile on the west side of the river that fed into the Big Eddy Dam substation near The Dalles, Oregon, and one mile on the east side that fed into the John Day Dam substation. The existing conductor was 2.5” in diameter, making it extremely heavy – nearly 4 lbs. per foot. The old conductor was replaced with Checker 1790 ACSR conductor. The new conductor was pulled in while the old was pulled out, and the extremely heavy weight plus the 4100’ span required pulling at tensions in excess of 25,000 lbs.

Completion Date: October 2010

Work Performed By: Hawkeye Construction, Inc., a Sturgeon Electric company; a subsidiary of MYR Group

Client: Bonneville Power Administration (BPA)

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