Idaho State Highway 22
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| Route information | |
| Maintained by ITD | |
| Length: | 43.936 mi (70.708 km) |
| Major junctions | |
| South end: |
 SH 33 near Howe
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 SH 28 near Blue Dome
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| North end: |
 I-15 in Dubois
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| Location | |
| Counties: | Butte, Clark, Jefferson |
| Highway system | |
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State Highway 22 (SH-22) is a state highway in Idaho from SH-33 to Interstate 15 (I-15) in Dubois.
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.
Route map: Google
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Wikipedia