Belfield-to-Rhame transmission line operational

April 15, 2010

Source: Basin Electric

Less than a year after construction began, Basin Electric has energized its newest transmission line -- the Belfield-to-Rhame line in southwest North Dakota. Construction began last May on the 74-mile, 230-kilovolt transmission line. Planning for the line began in 2007.

Bryan Keller, Basin Electric’s manager of transmission system maintenance, said the line was placed in operation at 4:44 p.m. April 7. The transmission line structures are galvanized steel, single-poles with no guy wires.

The transmission line project also included construction of a new substation south of Rhame, and expansion of an existing Western Area Power Administration substation east of Belfield.

The North Dakota Transmission Authority – through the Bank of North Dakota – financed $25 million of the $39.8-million project cost. The Authority was created in 2005 to aid in the development of new transmission lines in the state.

Facts about the Belfield-to-Rhame transmission line:

  • No. of tower structures: 524 (about seven structures per mile)
  • No. of feet of conductor: 1.2 million feet
  • No. of support arms: 1,407
  • Height of each transmission line structure: 95 feet
  • Dimensions of each tower: 42-inches in diameter at the base, tapering to 10 inches at top


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