(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 forth 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.
| County | Location | Mile[1] | # | Destinations | Notes |
| Payette | | 2.876 | 3 | US-95 – Parma, Fruitland, Payette | |
| 9.498 | 9 | US-30 west – Emmett, New Plymouth | West end of US-30 overlap |
| 12.906 | 13 | Black Canyon Junction | |
| Canyon | | 17.335 | 17 | Sand Hollow | |
| 24.839 | 25 | SH-44 – Middleton | |
| 25.994 | 26 |  US-20 west / US-26 west – Parma, Notus | West end of US-20/US-26 overlap |
| Caldwell | 26.723 | 27 |  I-84 Bus. east to SH-19 – Caldwell, Wilder, Homedale | |
| 27.620 | 28 | 10th Avenue – Caldwell City Center | |
| 28.650 | 29 |  US-20 east / US-26 east (Franklin Road) | East end of US-20/US-26 overlap |
| 33.539 | 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 |
| Nampa | 34.965 | 35 | Northside Boulevard | |
| 35.985 | 36 | Franklin Boulevard | |
| 37.945 | 38 | I-84 Bus. west (Garrity Boulevard) – Nampa, Murphy | |
| Ada | Meridian | 44.007 | 44 | SH-69 – Meridian, Kuna | |
| 45.998 | 46 | SH-55 north – McCall, Eagle | East end of SH-55 overlap |
| Boise | 49.307 | 49 | I-184 east / Franklin Road – Boise City Center | |
| 50.140 | 50 | Overland Road, Cole Road | Signed as exits 50A (west) and 50B (east) |
| 51.997 | 52 | Orchard Street | |
| 53.483 | 53 | Vista Avenue – Boise Airport | |
| 54.485 | 54 |  US-20 west / US-26 west (Broadway Avenue) – Boise City Center | West end of US-20/US-26 overlap |
| 56.932 | 57 | SH-21 (Gowen Road) – Idaho City | |
| 59.510 | 59 | South Eisenman Road, Memory Road | Signed as exits 59A (Eisenman Road) and 59B (Memory Road) eastbound |
| 63.517 | 64 | Blacks Creek Road – Kuna | |
| 70.772 | 71 | Orchard, Mayfield | |
| Elmore | | 74.333 | 74 | Simco Road | |
| 90.280 | 90 |   I-84 Bus. east to SH-51 / SH-67 – Mountain Home, Bruneau | |
| Mountain Home | 95.193 | 95 | US-20 east – Fairfield, Mountain Home, Sun Valley | East end of US-20 overlap |
| 99.570 | 99 |   I-84 Bus. west (Bennett Road, Old Oregon Trail Road) to SH-51 / SH-67 – Mountain Home | |
| 111.800 | 112 |  I-84 Bus. east to SH-78 – Hammett | |
| 113.856 | 114 |  I-84 Bus. west to SH-78 / Cold Springs Road – Hammett | Westbound exit and eastbound entrance |
| 120.149 | 120 | I-84 Bus. east – Glenns Ferry | Eastbound exit and westbound entrance |
| 121.094 | 121 | I-84 Bus. west – King Hill, Glenns Ferry | |
| 125.159 | 125 | Paradise Valley | |
| 128.993 | 129 | King Hill | |
| Gooding | | 137.060 | 137 |  I-84 Bus. east / US-30 east / Pioneer Road – Buhl, Bliss | East end of US-30 overlap |
| 140.405 | 141 |   I-84 Bus. west / US-26 east to US-30 – Gooding, Hagerman, Bliss | East end of US-26 overlap |
| 146.870 | 147 | Tuttle | |
| 155.260 | 155 | To SH-46 – Wendell, Hagerman | |
| 156.581 | 157 | SH-46 – Gooding, Wendell | |
| Jerome | | 165.160 | 165 | SH-25 – Jerome | |
| 168.010 | 168 | SH-79 – Jerome | |
| 173.013 | 173 | US-93 – Wells, Sun Valley, Twin Falls | |
| 181.930 | 182 | SH-50 – Kimberly, Eden, Twin Falls | |
| 188.301 | 188 | Valley Road – Hazelton, Eden | |
| 193.525 | 194 | SH-25 west (Ridgeway Road) – Hazleton | West end of SH-25 overlap |
| 200.536 | 201 | SH-25 east / Kasota Road – Paul | East end of SH-25 overlap |
| Minidoka |
| 208.015 | 208 |  I-84 Bus. east / SH-27 – Paul, Burley | |
| 210.591 | 211 |   I-84 Bus. west / US-30 west / SH-24 – Burley, Heyburn, Rupert | West end of US-30 overlap |
| Cassia | | 216.395 | 216 |  SH-25 / SH-77 – Albion, Rupert, Declo | |
| 221.880 | 222 |  I-86 east / US-30 east – Pocatello | East end of US-30 overlap; former I-15W east |
| 227.950 | 228 | To SH-81 / Yale Road – Malta, Declo | |
| 236.655 | 237 | Idahome Road | |
| 244.810 | 245 | Sublett Road – Malta | |
| 253.705 | 254 | Sweetzer Road | |
| Oneida | | 262.512 | 263 | Juniper Road | |