Friday, January 10, 2014

Idaho's Avalanche Alley Closed

Posted By on Fri, Jan 10, 2014 at 9:24 AM

There's good reason why it's called "Avalanche Alley." A 12-mile stretch of Idaho State Highway 21 between Banner Summit and Grandjean Junction includes nearly 60 spots where nearly 90 percent of all avalanches onto Idaho highways occur. In a typical winter, approximately 250 inches of snow fall on the area.

And due to this week's winter storm and warming trends for the coming weekend, the Idaho Transportation Department has closed Avalanche Alley until further notice.

ITD estimates that nearly 45 to 50 slides happen along Avalanche Alley each winter.

ITD officials said they'll evaluate the roadway for changing conditions, but travelers shouldn't plan on using the roadway anytime soon.

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