Fort Henry Historic Byway

Taking its name from the first European settlement in Idaho, Fort Henry Historic Byway displays the rugged and rural beauty of eastern Idaho. Hike or ATV the acres of white quartz sand blown into 400-foot-high dunes at St. Anthony Sand Dunes, try your hand at the renowned fishing opportunities along Henry’s Fork of the Snake River or spend time learning more about the Indigenous history in this area.


97 miles,
156 km

Time Icon


2 hours,
30 minutes



When to Visit

Spring, Summer, Fall

31 Byways. 31 Ways to Be Inspired.

A variety of scenic, natural, historic, recreational, archeological and cultural experiences can be found on Idaho’s 31 scenic byways. View the video to get a taste of the adventures that await you, and start planning your next road trip.

Road Trip Tips

Turn-by-Turn Directions: Begins at North Rexburg U.S. 20 exit, onto Salem Highway, to St. Anthony Sand Dunes on Red Road and on to A-2 Road Junction. Continue on A-2 north, then east to Island Park at U.S. 20. From the intersection of Salem Highway and 500 North, go east to St. Anthony on U.S. 20 Business Route, turn at the Fun Farm Sportsman Access and follow old U.S. 191 past Chester to Ashton.

Road Conditions: This byway is a two-lane road with no mountain passes. During the winter, A-2 is not plowed and becomes a snowmobiling trail.

Full Services in: Rexburg, St. Anthony, Ashton and Island Park

Partial Services in: Kilgore

Full Services: When gas, food and lodging are available

Partial Services: When gas and a few other facilities are available

Nearby Adventures

The Fort Henry Historic Byway in eastern Idaho is a great way to explore history with a side of outdoor adventure.

Download Before You Hit the Road

Start planning your epic Idaho road trip with the help of these free travel publications.

Idaho Roadsider

State Highway Map

Travel Tips

Need some ideas for your next Idaho road trip? Check out these travel tips and start planning your adventure.

Ready to Explore More Scenic Byways?