Interstate 84 in Idaho

Interstate 84
Vietnam Veterans Memorial Highway
I-84 highlighted in red
Route information
Maintained by ITD
Length	275.650 mi[1] (443.616 km)
NHS	Entire route
Major junctions
West end	I-84 at Oregon state line
Major intersections	US 95 near Fruitland US 20 / US 26 in Caldwell I-184 in Boise US 20 / US 26 in Boise US 20 in Mountain Home US 26 in Bliss US 93 near Twin Falls I-86 / US 30 near Declo
East end	I-84 at Utah state line
Location
Country	United States
State	Idaho
Counties	Payette, Canyon, Ada, Elmore, Gooding, Jerome, Minidoka, Cassia, Oneida
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future Idaho State Highway System Interstate US State
← SH-81 → I-86

Interstate 84 (I-84) in the U.S. state of Idaho is a major Interstate Highway that traverses the state from the Oregon state line in the northwest to Utah state line in the southeast. It primarily follows the Snake River across a plain that includes the cities of Boise, Mountain Home, and Twin Falls. The highway is one of the busiest in Idaho and is designated as the Vietnam Veterans Memorial Highway.

I-84 runs for 276 miles (444 km) within Idaho, beginning near Ontario, Oregon, and traveling concurrent with several U.S. routes through the Boise metropolitan area and Mountain Home towards Twin Falls. I-84 splits away from US 30 and the Snake River at a junction with I-86 near Declo, where it turns southeast to cross the Sublett Range into northern Utah. The highway has an auxiliary route, I-184, which serves downtown Boise.