SH-29 runs from SH-28 in Leadore to Montana Secondary Highway 324 (S-324) at the Montana state line at Bannock Pass.

The highway continues northeast as Railroad Canyon Road before turning north and entering the forest.

The road curves through the mountains until it reaches the Montana state line at Bannock Pass, where it becomes Montana Secondary Highway 324.

[2][1] According to some historic maps, the original route for Highway 29 was nearly the same as present day SH-33 from Sugar City at Digger Drive (U.S. Route 191 at the time), to the Wyoming state border near Teton Pass.

Media related to Idaho State Highway 29 at Wikimedia Commons