Department Of Transportation.
The Lewis and Clark Expedition journeyed through north-central Idaho 200 years ago in search of the Northwest Passage. The sparkling rivers, deep canyons, and rugged mountains they encountered are relatively unchanged. Experience the culture, recreation, and scenery in this breathtaking land of the Nez Perce.
Getting to the Byway:
Navigating the Byway:
Formerly called the Clearwater Canyons Scenic Byway, Idaho's Northwest Passage Scenic Byway is a 90-mile corridor through some of the most scenic and historic country in the United States. The Byway follows US 12 from Spalding along the Clearwater River to Kooskia, Idaho. From there it follows Idaho State Highway 13 to Grangeville. The byway is located equidistant between Boise, ID, Spokane, WA, and Missoula, MT in a region called North Central Idaho. Allow 1 hour and 30 minutes for a straight drive; however, if you want to visit and explore some of the Lewis and Clark and Nez Perce historical sites, give yourself more time.