Antelope Valley Station to Judson 345kV Transmission Line ^Transmission

Great Southwestern Construction crews built the 144-mile Antelope Valley Station to Judson Transmission Line over a two-year period, expanding and upgrading the transmission system in the Bakken Formation, an area covering 200,000 square miles. The 345kV, single-circuit line consisted of direct embed monopole, three-pole, and H-frame structures that began in Beulah, ran west toward Grassy Butte, and then north to Williston.

To minimize impacts on surrounding soil and wildlife, crews used a “Kaiser” walking mobile excavator and an Erickson Sky Crane to pick up, fly, and set the 16,000-pound structures. Doing so helped them avoid mobilizing heavy equipment and matting that could have damaged delicate ground conditions and caused additional disruptions to wildlife inhabiting the area.