Idaho Transportation Department Logo Idaho Transportation Department   Highway Info
ID 21
ID 21 in both directions: Slush, wet pavement, cloudy, large animals on roadway, rock fall danger.
Between I-84 and Lucky Peak Dam Road (2 miles north of the Boise area). Look out for slush on the roadway. The road is wet. Cloudy skies. Look out for large animals on the roadway. There is danger of a rock fall.
Last updated yesterday at 6:43am MST
ID 21 in both directions: Wet pavement, rain.
Between Lucky Peak Dam Road and Robie Creek Road (2 to 13 miles north of the Boise area). The road is wet. Expect rain.
Last updated yesterday at 9:31pm MST
ID 21 in both directions: Icy patches, rain and snow mixed.
Between Robie Creek Road (13 miles north of the Boise area) and King Road (Idaho City). Look out for icy patches. Look out for a mix of rain and snow.
Last updated yesterday at 9:31pm MST
ID 21 in both directions: Snow on roadway, icy patches, snow.
Between King Road and Garden Valley Road (31 miles north of the Idaho City area). Look out for snow on the roadway. Look out for icy patches. Be prepared for snow.
Last updated yesterday at 9:31pm MST
ID 21 in both directions: Snow on roadway, snow, large animals on roadway.
Between Garden Valley Road (31 miles north of the Idaho City area) and Grandjean Road (35 miles south of the Stanley area). Look out for snow on the roadway. Be prepared for snow. Look out for large animals on the roadway.
Last updated yesterday at 9:01pm MST
ID 21 in both directions: Snow on roadway, snow.
Between Grandjean Road and The Custer - Boise County Line (22 to 35 miles south of the Stanley area). Look out for snow on the roadway. Be prepared for snow.
Last updated yesterday at 9:01pm MST
ID 21 in both directions: Packed snow, light snow.
Between The Custer - Boise County Line (22 miles south of the Stanley area) and ID 75 (Stanley). Look out for packed snow on the roadway. Be prepared for light snow.
Last updated yesterday at 1:30pm MST
Switch to Road Reports
Switch to Truck Restrictions
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). Look out for slush on the roadway. The road is wet. Cloudy skies. Look out for large animals on the roadway. There is danger of a rock fall. Between Lucky Peak Dam Road and Robie Creek Road (2 to 13 miles north of the Boise area). The road is wet. Expect rain. Between Robie Creek Road (13 miles north of the Boise area) and King Road (Idaho City). Look out for icy patches. Look out for a mix of rain and snow. Between King Road and Garden Valley Road (31 miles north of the Idaho City area). Look out for snow on the roadway. Look out for icy patches. Be prepared for snow. Between Garden Valley Road (31 miles north of the Idaho City area) and Grandjean Road (35 miles south of the Stanley area). Look out for snow on the roadway. Be prepared for snow. Look out for large animals on the roadway. Between Grandjean Road and The Custer - Boise County Line (22 to 35 miles south of the Stanley area). Look out for snow on the roadway. Be prepared for snow. Between The Custer - Boise County Line (22 miles south of the Stanley area) and ID 75 (Stanley). Look out for packed snow on the roadway. Be prepared for light snow.
Google Static Map Image
State conditions legend State
Closure Closure
Public conditions legend Public
Weather warning legend Weather Warning