Idaho
- City of Rocks Back Country Byway
- Elk River Backcountry Byway
- Fort Henry Historic Byway
- Gold Rush Historic Byway
- Hells Canyon Scenic Byway - Idaho
- International Selkirk Loop - Idaho
- Lake Coeur d'Alene Scenic Byway
- Lewis and Clark Back Country Byway
- Lost Gold Trails Loop
- Main Oregon Trail Back Country Byway
- Mesa Falls Scenic Byway
- Northwest Passage Scenic Byway
- Oregon Trail-Bear Lake Scenic Byway
- Owyhee Uplands Back Country Byway
- Panhandle Historic Rivers Passage Scenic Byway
- Payette River Scenic Byway
- Peaks to Craters Scenic Byway
- Pend Oreille Scenic Byway
- Pioneer Historic Byway
- Ponderosa Pine Scenic Byway
- Sacajawea Historic Byway
- Salmon River Scenic Byway
- Sawtooth Scenic Byway
- Snake River Canyon Scenic Byway
- St. Joe River Scenic Byway
- Teton Scenic Byway
- Thousand Springs Scenic Byway
- Western Heritage Historic Byway
- White Pine Scenic Byway
- Wild Horse Trail Scenic Byway
- Wildlife Canyon Scenic Byway