Just 400 Feet Of Buried Cable Took Over 2 Years. Why America Still Has Millions Of Power Poles

Why does America still have millions of power poles when underground power lines can cut wildfire ignitions by about 99%? Explore the extreme engineering behind the power grid, from helicopter-installed transmission towers and high-voltage wire stringing to giant trenchers, horizontal directional drilling, concrete duct banks, and underground vaults. Watch crews handle cable reels weighing over 100 tons, pull power cables under highways and across waterways, and build the substation …