Idaho State Highway 28
| Sacajawea Historic Byway | ||||
SH-28 highlighted in red | ||||
| Route information | ||||
| Maintained by ITD | ||||
| Length | 135.645 mi (218.299 km) | |||
| Major junctions | ||||
| South end | SH-33 west of Mud Lake | |||
| SH-29 in Leadore | ||||
| North end | US 93 in Salmon | |||
| Location | ||||
| Country | United States | |||
| State | Idaho | |||
| Highway system | ||||
| ||||
| ||||
State Highway 28 (SH-28) is a 135.645-mile-long (218.299 km) state highway in Idaho which runs from Idaho State Highway 33 (SH-33) near Mud Lake to U.S. Route 93 in Salmon. The entire length of the route is designated as the Sacajawea Historic Byway by the state of Idaho.