U.S. Route 30 in Idaho

U.S. Highway 30
Route information
	Maintained by ITD
Length	455.481 mi[1] (733.026 km)
Existed	1926–present
Major junctions
West end	US 30 in Fruitland
	US 95 in Fruitland; I-84 near New Plymouth; US 20 / US 26 near Caldwell; I-184 in Boise; US 93 near Filer; I-84 / SH-24 in Heyburn; I-86 near Declo; I-15 BL / US 91 in Pocatello; I-15 in Pocatello; US 89 in Montpelier;
East end	US 30 near Dingle
Location
Counties	Payette, Canyon, Ada, Elmore, Gooding, Twin Falls, Cassia, Minidoka, Power, Bannock, Caribou, Bear Lake
Highway system

U.S. Route 30 (US 30) runs northwest–southeast across the southern half of lower Idaho for 455.481 miles (733.026 km). US 30 enters the state from Oregon across the Snake River in Fruitland and exits into Wyoming east of Dingle. US 26 runs through the large population centers of Boise, Twin Falls, and Pocatello, as well as a plethora of smaller communities from Fruitland to Montpelier.

The highway has four extensive concurrencies with Interstate Highways: Interstate 84 (I-84) twice, I-86, and I-15. Outside of its Interstate concurrencies, the route is largely two-lane and rural outside of portions through major towns and cities.

Major intersections

County	Location	mi[1][2][3][4]	km	Exit	Destinations	Notes
Payette	Fruitland	0.000	0.000		US 30 west – Ontario	Continuation into Oregon
	Fruitland	0.610	0.982		US 95 north (North Whitley Drive) / NW 16th Street – Payette, Weiser	Western end of US 95 overlap
		21.530	34.649		US 95 south to I-84 – Parma, Winnemucca	Eastern end of US 95 overlap; destinations signed eastbound only
		27.940	44.965		SH-72 east – Emmett	Western terminus of SH-72
		31.073– 31.175	50.007– 50.171	9	I-84 west – Ontario	Western end of I-84 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 BL 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 Blvd.) westbound
		34.965	56.271	35	Northside Boulevard
		35.985	57.912	36	Franklin Boulevard
		37.945	61.067	38	I-84 BL west (Garrity Boulevard) – Nampa, Murphy
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 – City Center	I-184 exit 0
		50.140	80.693	50	Cole Road / Overland Road	Signed as exits 50A (Overland Rd. west) and 50B (Cole/Overland) eastbound, and 50A (Cole/Overland) and 50B (Overland Rd. east) westbound
		51.997	83.681	52	Orchard Street
		53.483	86.073	53	Vista Avenue – Boise Airport
		54.485	87.685	54	US 20 / US 26 west (Broadway Avenue)	West end of US-20/US-26 overlap
		56.932	91.623	57	SH-21 (Gowen Road) – Idaho City
		59.510	95.772	59	S. Eisenman Road / Memory Road	Signed as exits 59A (S. Eisenman Rd.) and 59B (Memory Rd.) eastbound
		63.517	102.221	64	Blacks Creek Road – Kuna
	Regina	70.772	113.896	71	Mayfield, Orchard
Elmore		74.333	119.627	74	Simco Road
		90.280	145.292	90	I-84 BL east to SH-51 / SH-67 – Mountain Home, Bruneau	Eastbound signage
		90.280	145.292	90	West Mountain Home	Westbound signage
	Mountain Home	95.193	153.198	95	US 20 east (Sun Valley Highway) / I-84 BL west / SH-51 south (American Legion Boulevard) to SH-67 – Mountain Home, Fairfield	East end of US-20 overlap
		99.570	160.242	99	Old Oregon Trail Road – Mountain Home
		111.800	179.925	112	I-84 BL east to SH-78 – Hammett
		113.856	183.233	114	I-84 BL west to SH-78 / Cold Springs Road – Hammett	Westbound exit and eastbound entrance
		120.149	193.361	120	I-84 BL east – Glenns Ferry	Eastbound exit and westbound entrance
		121.094	194.882	121	I-84 BL west – King Hill, Glenns Ferry
		125.159	201.424	125	Paradise Valley
		128.993	207.594	129	King Hill
Gooding	Bliss	172.595	277.765	137	I-84 east / US 26 east / Old U.S. 30 – Twin Falls	Eastern end of I-84/US 26 overlap; western end of I-84 Bus. overlap; western terminus of I-84 Bus.
Gooding	Bliss	172.663	277.874		To I-84 / US 26 (I-84 Bus. east) / South 750 East – Twin Falls, Gooding	Eastern end of I-84 Bus. overlap; Twin Falls signed eastbound, Gooding westbound
Twin Falls	Buhl				North 1500 East Road (SH-46 north)	Southern terminus of SH-46
		211.645– 212.612	340.610– 342.166		US 93 – Sun Valley, Jackpot, Wells	Western end of US 93 Bus. overlap; western terminus of US 93 Bus.; interchange; Sun Valley and Jackpot signed eastbound, Wells westbound
	Twin Falls	217.199– 217.282	349.548– 349.681		US 93 Bus. north (Addison Avenue) to I-84 – Jerome, Sun Valley	Eastern end of US 93 Bus. overlap; to I-84, destinations signed westbound only
	Twin Falls	217.915	350.700		SH-74 south (Shoshone Street South) / Shoshone Street East – Wells	Northern terminus of SH-74
		223.505	359.696		SH-50 east to I-84 / North 3500 East – Burley, Pocatello	Western terminus of SH-50
Cassia	Burley	257.481	414.376		I-84 BL west / SH-27 (Overland Avenue) – Oakley, Paul	Western end of I-84 Bus. overlap
Cassia	Burley	258.628– 258.723	416.221– 416.374		SH-81 east / Airport Way – Declo	Western terminus of SH-81
Minidoka	Heyburn	261.123– 261.754	420.237– 421.252	211	I-84 west / SH-24 west – Twin Falls, Rupert	Eastern end of I-84 Bus. overlap; western end of I-84 overlap;Rupert signed eastbound only; eastern terminus of I-84 Bus.; western terminus of SH-84
Cassia		216.395	348.254	216	SH-25 / SH-77 – Albion, Rupert, Declo
Minidoka		272.947– 0.000	439.266– 0.000	222 1	I-84 east / I-86 begins – Ogden, Salt Lake	Eastern end of I-84 overlap; western end of I-86 overlap
Cassia		14.807	23.830	15	Raft River Area
Power		20.590	33.136	21	Coldwater Area
		28.100	45.223	28	Massacre Rocks State Park
		32.620	52.497	33	Neeley Area
	American Falls	36.123	58.134	36	SH-37 south / I-86 BL east – Rockland, American Falls
	American Falls	40.110	64.551	40	SH-39 north / I-86 BL west – Aberdeen, American Falls
		44.327	71.337	44	Seagull Bay
		49.152	79.102	49	Rainbow Road
		52.491	84.476	52	Arbon Valley
		55.551	89.401	56	Pocatello Regional Airport
		330.820– 330.930	532.403– 532.580	58	I-86 east / Tank Farm Road – Idaho Falls	Eastern end of I-86 overlap; I-86 exit 58
Bannock	Pocatello	335.778	540.382		I-15 BL north / US 91 north (Yellowstone Avenue) to I-15 / East Oak Street – Blackfoot, Idaho Falls	Western end of I-15 Bus./US 91 overlap; to I-15 signed westbound only
	Pocatello	339.220	545.922	67	I-15 north / South Fifth Avenue – Idaho Falls	Eastern end of I-15 Bus. overlap; western end of I-15 overlap; southern terminus of I-15 Bus.; I-15 exit 67
	Portneuf	63.037	101.448	63	Portneuf Road – Portneuf Area
	Inkom	57.694	92.849	58	I-15 BL south – Inkom	Southbound exit, northbound entrance
	Inkom	56.646	91.163	57	I-15 BL north – Inkom	Northbound exit, southbound entrance
		359.493	578.548	47	I-15 south / US 91 south / East Merrill Road – Arimo, Salt Lake	Eastern end of I-15/US 91 overlap
Caribou		386.450	621.931		SH-34 south / Old US 30 – Grace, Bancroft	Western end of SH-34 overlap; Bancroft signed westbound only
Caribou	Soda Springs	405.543	652.658		SH-34 north (South Third Street) / South Third Street – Wayan, Jackson	Eastern end of SH-34 overlap
Bear Lake	Montpelier	434.712	699.601		US 89 north (Clay Street) / Clay Street – Afton, Jackson	Western end of US 89 overlap; destinations signed westbound only
	Montpelier	435.015	700.089		US 89 south (Washington Street) / Washington Street – Paris, Bear Lake, Logan, Salt Lake	Eastern end of US 89; only Paris signed westbound
		455.481	733.026		US 30 east	Continuation into Wyoming
1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus

References

"State Highway System Route: 0030" (PDF). Idaho Transportation Department Milepoint Log. Idaho Transportation Department. January 25, 2016. Retrieved November 7, 2020.
"State Highway System Route: 0093" (PDF). Idaho Transportation Department Milepoint Log. Idaho Transportation Department. January 12, 2016. Retrieved November 7, 2020.
"State Highway System Route: 0084" (PDF). Idaho Transportation Department Milepoint Log. Idaho Transportation Department. January 12, 2016. Retrieved November 7, 2020.
"State Highway System Route: 0015" (PDF). Idaho Transportation Department Milepoint Log. Idaho Transportation Department. January 25, 2016. Retrieved November 7, 2020.

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[US30-1] "State Highway System Route: 0030" (PDF). Idaho Transportation Department Milepoint Log. Idaho Transportation Department. January 25, 2016. Retrieved November 7, 2020.

[US95-2] "State Highway System Route: 0093" (PDF). Idaho Transportation Department Milepoint Log. Idaho Transportation Department. January 12, 2016. Retrieved November 7, 2020.

[I84-3] "State Highway System Route: 0084" (PDF). Idaho Transportation Department Milepoint Log. Idaho Transportation Department. January 12, 2016. Retrieved November 7, 2020.

[I15-4] "State Highway System Route: 0015" (PDF). Idaho Transportation Department Milepoint Log. Idaho Transportation Department. January 25, 2016. Retrieved November 7, 2020.