The intersection of US Hwy 89 and US Hwy 30 at Montpelier is the site of the attractive National Oregon-California Trail Center dedicated to the history and scenic wonders of the 2000-mile Oregon-California Trail, part of the largest voluntary migration ever. The sites in this area are documented in diaries of the emigrants, in military records, by early mountain men, and settlers.
The byway begins at the Utah/Idaho state line and follows US Hwy 89 north to US Hwy 30, then north and west to Soda Springs, where it meets the Pioneer Historic Byway. The route then goes to Bancroft, Lava Hot Springs and McCammon, Idaho.