Interstate 84 in Idaho

Interstate 84
Route information
Maintained by ITD
Length:	275.650 mi[1] (443.616 km)
Major junctions
West end:	I-84 at Oregon state line
	US 95 near Fruitland I-184 in Boise I-86 near Declo
East end:	I-84 at Utah state line
Location
Counties:	Payette, Canyon, Ada, Elmore, Gooding, Jerome, Minidoka, Cassia, Oneida
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future State Highways in Idaho Interstate U.S. State ← SH 81 I-86 →

Interstate 84 (I-84) in the U.S. state of Idaho, also known as The Vietnam Veterans Memorial Highway,^[2] heads southeast from the Oregon state line near Fruitland. It connects via I-184 to Boise. Eventually, I-84 connects to Interstate 86, and mainline I-84 heads southeast towards Utah. I-86 continues due east and heads to Pocatello, meeting with I-15. I-84 exits the state to the southeast at the Utah state line near the town of Stone.

Route description

Eastbound I-84 in Boise in 2016, approaching I-184 interchange

Eastbound from Oregon, Interstate 84 enters Idaho after crossing the Snake River at an approximate elevation of 2,150 feet (660 m) above sea level. The highway proceeds southeast, passing the community of Fruitland, and reaching an interchange (#3) with U.S. Route 95. It continues southward through rural agricultural area, reaching interchanges with U.S. Route 30 (and Old U.S. 30) as well as passing numerous small buildings. The road continues southeast, traveling parallel to Old U.S. Route 30, reaching an interchange with State Highway 44 from Middleton. The roadway proceeds, interchanging with U.S. Route 20/26, which continue concurrently with the highway.

Interstate 84 Business splits off in Caldwell, while I-84 interchanges with 10th Avenue before U.S. 20/26 split off the roadway. The highway continues southeast through Caldwell, then bends east and enters Nampa. I-84 Business returns to the parent route within the city. Adding lanes, the highway continues through Meridian, reaching interchanges with several small roads.

The roadway enters Boise and reaches an interchange with Interstate 184, its auxiliary route which connects to the city center. The highway turns southeast, passing Boise Airport, and interchanges with several roads, before reaching an interchange with U.S. 20/26, which continue concurrently with I-84. Southeast out of Boise, the interstate ascends past the 3,000-foot (910 m) level, enters rural desert area, and interchanges with a few small roads. It bypasses Mountain Home, where Interstate 84 Business (Old U.S. 30) splits off and enters the community. U.S. 20 splits off and heads east towards Fairfield, the way to the Sun Valley ski resort.

I-84 eastbound, nearing
Mountain Home in 2016

South of Mountain Home, I-84 Business reenters the highway, which proceeds eastward, traveling upstream and parallel to the Snake River, before bypassing Glenns Ferry. The highway continues east near the river, interchanging repeatedly with Old U.S. Route 30, bypassing Bliss, where U.S. 26 splits off east to Gooding and Shoshone. The interstate bends southeast, passing through the Malad Gorge and Thousand Springs State Park, Wendell, and bypassing Jerome. It continues to an interchange with U.S. Route 93, which connects south to Twin Falls, before returning to running parallel to the Snake River.

The interstate proceeds east, now over 4,000 feet (1,220 m) in elevation, passing the Hazelton Municipal Airport, and interchanging with several small roads. It passes north of Burley, then reaches an interchange with Interstate 86, which connects to Pocatello. I-84 proceeds southeast, parallel to State Highway 81 for a short distance, then climbs Meadow Creek to an elevated area which crests at 5,530 feet (1,690 m) at Sweetzer Summit. The highway descends southeast through Juniper Valley to the state line, at 4,500 feet (1,370 m), and continues in Utah.^[3]

Future

(As of June 2008) The current pavement starting from the Broadway Interchange in Boise to just before the Cole and Overland Interchange is the original pavement built almost 40 years ago. The Idaho Transportation Department is planning to add a third and fourth lane in that area and repave the bumpy road. In the area between the Meridian Interchange and the Garrity Interchange they are currently creating a third lane due to the heavy traffic in that area. The lanes are now open between Broadway (Exit 54) and the Nampa area (Exit 38). ITD Plans to continue the lanes until about the Caldwell area.

Exit list

County	Location	mi[1]	km	Exit	Destinations	Notes
Payette	​	0.000	0.000		I-84 west – Portland, Seattle	Continuation into Oregon
	​	2.876	4.628	3	US 95 – Parma, Fruitland, Payette	Primary commercial route to north Idaho
	​	9.498	15.286	9	US 30 west – Emmett, New Plymouth	West end of US-30 overlap
	​	12.906	20.770	13	Black Canyon Junction
Canyon	​	17.335	27.898	17	Sand Hollow
	​	24.839	39.974	25	SH 44 – Middleton
	​	25.994	41.833	26	US 20 west / US 26 west – Parma, Notus	West end of US-20/US-26 overlap
	Caldwell	26.723	43.006	27	I-84 Business Loop east to SH 19 – Caldwell, Wilder, Homedale
		27.620	44.450	28	10th Avenue – Caldwell City Center
		28.650	46.108	29	US 20 east / US 26 east (Franklin Road)	East end of US-20/US-26 overlap
	Nampa	33.539	53.976	33	SH 55 south / Midland Boulevard – Nampa, Marsing	West end of SH-55 overlap; signed as exits 33A (SH-55) and 33B (Midland Boulevard) westbound
		34.965	56.271	35	Northside Boulevard
		35.985	57.912	36	Franklin Boulevard
		37.945	61.067	38	I-84 Business Loop west (Garrity Boulevard) – Nampa, Murphy	Exit for the Ford Idaho Center
Ada	Meridian	42.000	67.592	42	Ten Mile Road
		44.007	70.822	44	SH 69 – Meridian, Kuna
		45.998	74.027	46	SH 55 north – McCall, Eagle	East end of SH-55 overlap
	Boise	49.307	79.352	49	I-184 east / Franklin Road – Boise City Center
		50.140	80.693	50	Overland Road, Cole Road	Signed as exits 50A (West Overland Road) and 50B (Cole Road/Overland Road) eastbound, and 50A (Cole Road/Overland Road) and 50B (East Overland Road) westbound
		51.997	83.681	52	Orchard Street
		53.483	86.073	53	Vista Avenue – Boise Airport
		54.485	87.685	54	US 20 west / US 26 west (Broadway Avenue) – Boise City Center	West end of US-20/US-26 overlap
		56.932	91.623	57	SH 21 (Gowen Road) – Idaho City	Exit for South Federal Way
	​	59.510	95.772	59	South Eisenman Road Interchange	Signed as exits 59A (South Eisenman IC) and 59B (Memory Road) eastbound
	​	63.517	102.221	64	Blacks Creek Road – Kuna
	​	70.772	113.896	71	Orchard, Mayfield
Elmore	​	74.333	119.627	74	Simco Road
	​	90.280	145.292	90	I-84 Business Loop east to SH 51 / SH 67 – Mountain Home, Bruneau
	Mountain Home	95.193	153.198	95	US 20 east – Fairfield, Mountain Home, Sun Valley	East end of US-20 overlap
	​	99.570	160.242	99	I-84 Business Loop west (Bennett Road, Old Oregon Trail Road) to SH 51 / SH 67 – Mountain Home
	​	111.800	179.925	112	I-84 Business Loop east to SH 78 – Hammett
	​	113.856	183.233	114	I-84 Business Loop west to SH 78 / Cold Springs Road – Hammett	Westbound exit and eastbound entrance
	​	120.149	193.361	120	I-84 Business Loop east – Glenns Ferry	Eastbound exit and westbound entrance
	​	121.094	194.882	121	I-84 Business Loop west – King Hill, Glenns Ferry
	​	125.159	201.424	125	Paradise Valley
	​	128.993	207.594	129	King Hill
Gooding	​	137.060	220.577	137	I-84 Business Loop east / US 30 east / Pioneer Road – Buhl, Bliss	East end of US-30 overlap
	​	140.405	225.960	141	I-84 Business Loop west / US 26 east to US 30 – Gooding, Hagerman, Bliss	East end of US-26 overlap
	​	146.870	236.364	147	Tuttle
	​	155.260	249.867	155	To SH 46 – Wendell, Hagerman
	​	156.581	251.993	157	SH 46 – Gooding, Wendell
Jerome	​	165.160	265.799	165	SH 25 – Jerome
	​	168.010	270.386	168	SH 79 – Jerome
	​	173.013	278.437	173	US 93 – Wells, Sun Valley, Twin Falls, Las Vegas	Main exit into Twin Falls via the Perrine Bridge
	​	181.930	292.788	182	SH 50 – Kimberly, Eden, Twin Falls
	​	188.301	303.041	188	Valley Road – Hazelton, Eden
	​	193.525	311.448	194	SH 25 west (Ridgeway Road) – Hazleton	West end of SH-25 overlap
Jerome–Minidoka county line	​	200.536	322.731	201	SH 25 east / Kasota Road – Paul	East end of SH-25 overlap
Minidoka	​	208.015	334.768	208	I-84 Business Loop east / SH 27 – Paul, Burley
	​	210.591	338.913	211	I-84 Business Loop west / US 30 west / SH 24 – Burley, Heyburn, Rupert	West end of US-30 overlap
Cassia	​	216.395	348.254	216	SH 25 / SH 77 – Albion, Rupert, Declo
	​	221.880	357.081	222	I-86 east / US 30 east to I-15 – Pocatello	East end of US-30 overlap; former I-15W east; I-86 west exit 1
	​	227.950	366.850	228	To SH 81 / Yale Road – Malta, Declo
	​	236.655	380.859	237	Idahome Road
	​	244.810	393.984	245	Sublett Road – Malta
	​	253.705	408.299	254	Sweetzer Road
Oneida	​	262.512	422.472	263	Juniper Road
	​	275.650	443.616		I-84 east – Ogden, Salt Lake City	Continuation into Utah
1.000 mi = 1.609 km; 1.000 km = 0.621 mi       Concurrency terminus       Incomplete access

References

External links

Wikimedia Commons has media related to Interstate 84 in Idaho.

Route map: Google

• Idaho Transportation Dept. – Milepost log – Interstate 84
  • Roadcams – Interstate 84
• David Rumsey Map Collection – Historic road map (1937) – Idaho, Montana, Wyoming – Texaco (Rand McNally)
  • Idaho highway map (1956) – Shell (H.M. Gousha)

Interstate 84
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