U.S. Route 30 in Idaho
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.
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Route information | ||||
Maintained by ITD | ||||
Length | 455.481 mi[1] (733.026 km) | |||
Existed | 1926 | –present|||
Major junctions | ||||
West end | ![]() | |||
East end | ![]() | |||
Location | ||||
Counties | Payette, Canyon, Ada, Elmore, Gooding, Twin Falls, Cassia, Minidoka, Power, Bannock, Caribou, Bear Lake | |||
Highway system | ||||
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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 | ![]() | Continuation into Oregon | |
0.610 | 0.982 | ![]() | Western end of US 95 overlap | |||
| 21.530 | 34.649 | ![]() ![]() | Eastern end of US 95 overlap; destinations signed eastbound only | ||
| 27.940 | 44.965 | ![]() | Western terminus of SH-72 | ||
| 31.073– 31.175 | 50.007– 50.171 | 9 | ![]() | 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 | ![]() | ||
| 25.994 | 41.833 | 26 | ![]() ![]() | West end of US-20/US-26 overlap | |
Caldwell | 26.723 | 43.006 | 27 | ![]() ![]() | ||
27.620 | 44.450 | 28 | 10th Avenue – Caldwell City Center | |||
28.650 | 46.108 | 29 | ![]() ![]() | East end of US-20/US-26 overlap | ||
Nampa | 33.539 | 53.976 | 33 | ![]() | 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 | ![]() | |||
Ada | Meridian | 42.000 | 67.592 | 42 | Ten Mile Road | |
44.007 | 70.822 | 44 | ![]() | |||
45.998 | 74.027 | 46 | ![]() | East end of SH-55 overlap | ||
Boise | 49.307 | 79.352 | 49 | ![]() | 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 | ![]() ![]() | West end of US-20/US-26 overlap | ||
56.932 | 91.623 | 57 | ![]() | |||
| 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 | ![]() ![]() ![]() | Eastbound signage | |
West Mountain Home | Westbound signage | |||||
Mountain Home | 95.193 | 153.198 | 95 | ![]() ![]() ![]() ![]() | East end of US-20 overlap | |
| 99.570 | 160.242 | 99 | Old Oregon Trail Road – Mountain Home | ||
| 111.800 | 179.925 | 112 | ![]() ![]() | ||
| 113.856 | 183.233 | 114 | ![]() ![]() | Westbound exit and eastbound entrance | |
| 120.149 | 193.361 | 120 | ![]() | Eastbound exit and westbound entrance | |
| 121.094 | 194.882 | 121 | ![]() | ||
| 125.159 | 201.424 | 125 | Paradise Valley | ||
| 128.993 | 207.594 | 129 | King Hill | ||
Gooding | Bliss | 172.595 | 277.765 | 137 | ![]() ![]() | Eastern end of I-84/US 26 overlap; western end of I-84 Bus. overlap; western terminus of I-84 Bus. |
172.663 | 277.874 | ![]() ![]() | 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 | ![]() | 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 | ![]() ![]() ![]() ![]() | Eastern end of US 93 Bus. overlap; to I-84, destinations signed westbound only | ||
217.915 | 350.700 | ![]() | Northern terminus of SH-74 | |||
| 223.505 | 359.696 | ![]() ![]() | Western terminus of SH-50 | ||
Cassia | Burley | 257.481 | 414.376 | ![]() ![]() | Western end of I-84 Bus. overlap | |
258.628– 258.723 | 416.221– 416.374 | ![]() | Western terminus of SH-81 | |||
Minidoka | Heyburn | 261.123– 261.754 | 420.237– 421.252 | 211 | ![]() ![]() | 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 | ![]() ![]() | |
Minidoka | | 272.947– 0.000 | 439.266– 0.000 | 222 1 | ![]() ![]() | 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 | ![]() ![]() | ||
40.110 | 64.551 | 40 | ![]() ![]() | |||
| 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 | ![]() | Eastern end of I-86 overlap; I-86 exit 58 | |
Bannock | Pocatello | 335.778 | 540.382 | ![]() ![]() ![]() | Western end of I-15 Bus./US 91 overlap; to I-15 signed westbound only | |
339.220 | 545.922 | 67 | ![]() | 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 | ![]() | Southbound exit, northbound entrance | |
56.646 | 91.163 | 57 | ![]() | Northbound exit, southbound entrance | ||
| 359.493 | 578.548 | 47 | ![]() ![]() | Eastern end of I-15/US 91 overlap | |
Caribou | | 386.450 | 621.931 | ![]() | Western end of SH-34 overlap; Bancroft signed westbound only | |
Soda Springs | 405.543 | 652.658 | ![]() | Eastern end of SH-34 overlap | ||
Bear Lake | Montpelier | 434.712 | 699.601 | ![]() | Western end of US 89 overlap; destinations signed westbound only | |
435.015 | 700.089 | ![]() | Eastern end of US 89; only Paris signed westbound | |||
| 455.481 | 733.026 | ![]() | Continuation into Wyoming | ||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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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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