Today, in the United States, there is an estimated 200,000 miles of electric transmission power lines. Only 5,000 of those miles are underground. Underground power lines are less popular for both budgetary and engineering reasons. Environmental and legal issues also often come into play. It is a combination of each of these factors that has led to the underground power line’s lesser popularity. It is predicted, however, that the demand for underground power lines will continue to grow as engineers and city planners improve the construction practices of underground power lines.
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