Idaho State Highway 22

State highway in Idaho, United States

Major junctionsSouth end

SH-33 near HoweMajor intersections

SH-28 near Blue DomeNorth end

I-15 in Dubois LocationCountryUnited StatesStateIdahoCountiesButte, Clark, Jefferson Highway system

Idaho State Highway System

←

SH-21

→

SH-24

State Highway 22 (SH-22) is a 43.936-mile-long (70.708 km) state highway in Idaho from SH-33 to Interstate 15 (I-15) in Dubois.

Route description

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.^[1]^[2]

History

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,^[3] 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.^[4]

Junction list

County	Location	mi^[1]	km	Destinations	Notes
Butte		0.000	0.000	SH-33	Eastern end of SH-33 overlap
Clark		13.588	21.868	SH-28 – Salmon
Jefferson	No major junctions
Clark		43.478	69.971	Small Road	Old US 91
Clark	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 Concurrency terminus

References

^ ^a ^b ^c 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