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ID 21
ID 21 in both directions: Dry pavement, cloudy.
Between I-84 and Lucky Peak Dam Road (2 miles north of the Boise area). Expect dry pavements. Cloudy skies.
Last updated yesterday at 12:38pm MST
ID 21 in both directions: Dry pavement, cloudy, large animals on roadway, rock fall danger.
Between Lucky Peak Dam Road and Robie Creek Road (2 to 13 miles north of the Boise area). Expect dry pavements. Cloudy skies. Look out for large animals on the roadway. There is danger of a rock fall.
Last updated yesterday at 8:57pm MST
ID 21 in both directions: Icy patches, cloudy, large animals on roadway, rock fall danger.
Between Robie Creek Road (13 miles north of the Boise area) and The Custer - Boise County Line (22 miles south of the Stanley area). Look out for icy patches. Cloudy skies. Look out for large animals on the roadway. There is danger of a rock fall.
Last updated yesterday at 8:57pm MST
ID 21: Road closed to traffic, avalanche.
Between Warm Springs Creek Airport Road and The Custer - Boise County Line (23 to 35 miles south of the Stanley area). The road is closed to traffic. There's been an avalanche.

Web Comment: Milepost 93.7 to 105.5, Grandjean to Banner Summit. The highway remains closed until further notice. Will reassess conditions at 7:00AM MST.
Last updated yesterday at 4:33pm MST
ID 21 in both directions: Icy patches, cloudy.
Between The Custer - Boise County Line (22 miles south of the Stanley area) and ID 75 (Stanley). Look out for icy patches. Cloudy skies.
Last updated yesterday at 12:53pm MST
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Reports on ID 21
Map of Reports on ID 21 Between I-84 and Lucky Peak Dam Road (2 miles north of the Boise area). Expect dry pavements. Cloudy skies. Between Lucky Peak Dam Road and Robie Creek Road (2 to 13 miles north of the Boise area). Expect dry pavements. Cloudy skies. Look out for large animals on the roadway. There is danger of a rock fall. Between Robie Creek Road (13 miles north of the Boise area) and The Custer - Boise County Line (22 miles south of the Stanley area). Look out for icy patches. Cloudy skies. Look out for large animals on the roadway. There is danger of a rock fall. Between Warm Springs Creek Airport Road and The Custer - Boise County Line (23 to 35 miles south of the Stanley area). The road is closed to traffic. There's been an avalanche. Between The Custer - Boise County Line (22 miles south of the Stanley area) and ID 75 (Stanley). Look out for icy patches. Cloudy skies.
ID 21: Road closed to traffic, avalanche.
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State conditions legend State
Closure Closure
Public conditions legend Public
Weather warning legend Weather Warning