Signs From Idaho

ID-21 South at Banks-Lowman Highway Jct. Use the Banks-Lowman Highway for Garden Valley and Banks.

Entering Lowman on ID-21 south.

ID-21 south at Grandjean Jct.

Entering Avalanche Zone on ID-21 south. This area south of Banner Summit has frequent avalanches in the winter, which causes road closures.

Entering Boise County along ID-21 south. The Boise-Custer County Line is located on Banner Summit - Elevation 7037 Feet.

ID-21 North - Ponderosa Pine Scenic Byway. The Ponderosa Pine Scenic Byway runs along ID-21 between Boise and Stanley.

Truck restrictions on ID-21 between Lowman and Idaho City.

ID-75 North at ID-21 South. Use ID-75 north for Lower Stanley and Salmon. Use ID-21 south for Boise. The Salmon River can be seen in the background of the picture.

ID-21 Junction on ID-75 North in Stanley.

Approaching ID-21 Junction on ID-75 North in Stanley. Milemarker 189.