Pacific Gas and Electric announced that crews have undergrounded about 1,000 miles of power lines in high-wildfire-risk areas across the San Francisco Bay Area and Central California.

"A thousand miles is longer than the state of California, so that thousand miles of power lines have now kept customers safe from wildfire risk," Dave Canny, the vice president of PG&E North Coast Region, told CBS News Bay Area.

Canny oversees several crews, including the crews working in the mountainous neighborhood of Angwin in Napa County.

"These power lines at the top of the pole, once our project is complete, those will be removed permanently, permanently removing any wildfire risks associated with those lines," he said.

Crews are paving trenches to install power lines underground, and in Napa County

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