SH-22 highlighted in red
|Maintained by ITD|
|Length||43.936 mi (70.708 km)|
|South end||SH-33 near Howe|
|SH-28 near Blue Dome|
|North end||I-15 in Dubois|
|Counties||Butte, Clark, Jefferson|
SH 22 begins at SH 33 near Arco and travels northeast across the desert before intersecting SH 28 and slowly bending east, passing by some farmland. The highway ends in the city of Dubois at a diamond interchange with I-15.
The current SH 22 bears no resemblance to its original configuration. The route of the original SH 22 was based on Sampson Trails G and H from Mountain Home to Trude, which are essentially the route of today's US 20 from Mountain Home through Arco to Idaho Falls and US 26 east from there.
The current configuration is based on the original SH 29 from the 1937 map.
|Butte||||0.000||0.000||SH-33||Eastern end of SH 33 overlap|
|Clark||||13.588||21.868||SH-28 – Salmon|
||No major junctions|
|Clark||||43.478||69.971||Small Road||Old US 91|
|Dubois||43.936||70.708||I-15 – Idaho Falls, Butte||I-15 exit 167; eastern terminus.|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
- Idaho Transportation Department (January 2, 2016). "State Highway 22 Milepoint Log" (PDF). Idaho Transportation Department. Retrieved February 15, 2017.
- Google (20 July 2012). "State Highway 22" (Map). Google Maps. Google. Retrieved 20 July 2012.
- List of state highways in Idaho#History
- Rand McNally and Company, Road map: Idaho, Mont., Wyo., published by Texaco, 1937
Media related to Idaho State Highway 22 at Wikimedia Commons