End ID-31 South at US-26
End ID-31 South at US-26 in Swan Valley. Turn left for US-26 East to Irwin; right for US-26 west to Ririe and Idaho Falls.
US-26 East at ID-31
US-26 east at ID-31 north to Victor and Driggs. ID-31 is also a shorter route into Jackson, which goes over Teton Pass. However, trucks cannot use this route.