© 2026 Boise State Public Radio
NPR in Idaho
Play Live Radio
Next Up:
0:00
0:00
0:00 0:00
Available On Air Stations
Stay informed when wildfire smoke impacts Idaho. Find air quality resources, smoke safety tips and more in our wildfire guide.

Update – Avalanche Alley Re-opens

 

Update:  Avalanche Alley, also known as Idaho Highway 21 between Grandjean Junction and Banner Summit on the way to Stanley re-opened Saturday, December 31st at 12:20pm.

 

 

BOISE, Id – The section of Idaho Highway 21 known as Avalanche Alley closed down today.  The 12-mile stretch runs between .  Reed Hollinshead is the Public Information Specialist for the Idaho Transportation Department.

Reed Hollinshead “This is the first one this year but it does happen every year, it’s just a precautionary closure, it’s just best in those cases to close it down before someone gets trapped and one of those things comes down on top of them.”

Hollinshead blames the weather for the closure.  The snowpack around that stretch of road is weak and rain in the forecast will increase the chance of an avalanche.  He says this part of Idaho 21 earns its nickname of “Avalanche Alley” every year.

Reed Hollinshead “It’s a stretch that’s home to about 60 different avalanche paths and about 90 percent of all the activity in the state that happens to do with highway and avalanches, happens right in that area, so we end up closing that thing down probably nine, ten, eleven, twelve days of the year.”

If conditions deteriorate, the road could be closed a week or more.  If the weather cooperates, the road could re-open as soon as Saturday.  Hollinshead says to find out when the highway will re-open, call Idaho Traveler Services at 511 for updates.

Copyright 2011 BSPR

As Senior Producer of our live daily talk show Idaho Matters, I’m able to indulge my love of storytelling and share all kinds of information (I was probably a Town Crier in a past life). My career has allowed me to learn something new everyday and to share that knowledge with all my friends on the radio.

You make stories like this possible.

The biggest portion of Boise State Public Radio's funding comes from readers like you who value fact-based journalism and trustworthy information.

Your donation today helps make our local reporting free for our entire community.