DENVER, Colo.—Mudslides from heavy rains caused “extreme damage” to a major interstate and left it blocked with piles of boulders and logs, Colorado transportation officials said Sunday, as forecasters warned of more flash floods in the coming days across the Rocky Mountain and Great Basin regions.
The flood risk was elevated for many areas of the West where recent wildfires burned away vegetation and left hillsides more susceptible to erosion, the National Weather Service said.
