NHTSA FARS 2020–2024
Deadliest Highways and Roads in Idaho
Quick answer: US-95 is the deadliest road in Idaho: 101 people died in crashes on it from 2020 to 2024, the worst stretch being near Payette County (8 deaths within about 7 miles). Next: I-84 (90) and US-20 (71).
| # | Road | Deaths | Fatal crashes | 2020 · 2024 | Deadliest ~7-mile stretch | Counties |
|---|---|---|---|---|---|---|
| 1 | US-95 U.S. Highway |
101 | 84 | 20 → 23 | near Payette County: 8 deaths map | Idaho County, Kootenai County, Nez Perce County, Boundary County |
| 2 | I-84 Interstate · live page |
90 | 86 | 15 → 15 | near Payette County: 7 deaths map | Elmore County, Ada County, Jerome County, Payette County |
| 3 | US-20 U.S. Highway |
71 | 58 | 11 → 20 | near Bonneville County: 9 deaths map | Bonneville County, Fremont County, Canyon County, Ada County |
| 4 | I-15 Interstate · live page |
45 | 37 | 5 → 8 | near Bonneville County: 6 deaths map | Bannock County, Bingham County, Bonneville County, Clark County |
| 5 | SR-55 State Highway |
42 | 39 | 12 → 3 | near Boise County: 6 deaths map | Canyon County, Boise County, Valley County, Ada County |
| 6 | US-93 U.S. Highway |
35 | 32 | 4 → 9 | near Jerome County: 4 deaths map | Twin Falls County, Jerome County, Lemhi County, Lincoln County |
| 7 | US-30 U.S. Highway |
27 | 23 | 6 → 3 | near Bannock County: 4 deaths map | Twin Falls County, Bannock County, Cassia County, Caribou County |
| 8 | US-12 U.S. Highway |
26 | 25 | 3 → 8 | near Nez Perce County: 3 deaths map | Idaho County, Nez Perce County, Lewis County, Clearwater County |
| 9 | US-26 U.S. Highway |
25 | 21 | 7 → 6 | near Bonneville County: 6 deaths map | Bonneville County, Lincoln County, Gooding County, Butte County |
| 10 | SR-33 State Highway |
19 | 16 | 4 → 2 | near Teton County: 4 deaths map | Teton County, Madison County, Jefferson County, Butte County |
| 11 | I-90 Interstate · live page |
17 | 16 | 5 → 2 | near Kootenai County: 6 deaths map | Kootenai County, Shoshone County |
| 12 | SR-75 State Highway |
17 | 15 | 2 → 2 | near Blaine County: 4 deaths map | Blaine County, Custer County, Lincoln County |
| 13 | US-91 U.S. Highway |
17 | 14 | 2 → 5 | near Franklin County: 3 deaths map | Bingham County, Franklin County, Bannock County, Bonneville County |
| 14 | SR-21 State Highway |
13 | 13 | 2 → 2 | near Ada County: 3 deaths map | Boise County, Ada County, Custer County |
| 15 | SR-25 State Highway |
12 | 9 | 1 → 1 | near Jerome County: 4 deaths map | Jerome County, Minidoka County |
| 16 | I-86 Interstate |
12 | 11 | 1 → 3 | near Cassia County: 4 deaths map | Cassia County, Power County, Bannock County |
| 17 | SR-41 State Highway |
11 | 9 | 1 → 4 | near Bonner County: 5 deaths map | Bonner County, Kootenai County |
| 18 | SR-52 State Highway |
11 | 8 | 2 → 1 | near Gem County: 3 deaths map | Gem County, Payette County |
| 19 | SR-16 State Highway |
10 | 9 | 5 → 0 | near Ada County: 5 deaths map | Ada County, Gem County |
| 20 | SR-51 State Highway |
9 | 7 | 1 → 0 | near Elmore County: 4 deaths map | Elmore County, Owyhee County |
| 21 | SR-39 State Highway |
8 | 6 | 0 → 1 | near Bingham County: 4 deaths map | Bingham County |
| 22 | SR-44 State Highway |
8 | 7 | 0 → 3 | near Ada County: 4 deaths map | Ada County, Canyon County |
| 23 | SR-78 State Highway |
7 | 7 | 0 → 1 | — | Owyhee County |
| 24 | SR-53 State Highway |
6 | 5 | 1 → 1 | near Kootenai County: 3 deaths map | Kootenai County |
| 25 | SR-200 State Highway |
6 | 4 | 3 → 1 | near Bonner County: 4 deaths map | Bonner County |
| 26 | SR-69 State Highway |
6 | 5 | 0 → 1 | near Ada County: 3 deaths map | Ada County |
| 27 | SR-81 State Highway |
6 | 5 | 0 → 4 | near Cassia County: 3 deaths map | Cassia County |
| 28 | SR-3 State Highway |
5 | 5 | 0 → 1 | — | Kootenai County, Latah County |
| 29 | SR-46 State Highway |
4 | 4 | 3 → 0 | — | Gooding County |
| 30 | SR-13 State Highway |
4 | 3 | 1 → 0 | near Idaho County: 3 deaths map | Idaho County |
| 31 | SR-27 State Highway |
4 | 2 | 2 → 0 | — | Cassia County |
| 32 | SR-50 State Highway |
4 | 4 | 1 → 1 | — | Twin Falls County |
| 33 | US-89 U.S. Highway |
4 | 3 | 2 → 1 | — | Bear Lake County |
| 34 | SR-97 State Highway |
4 | 4 | 0 → 0 | — | Kootenai County |
| 35 | SR-6 State Highway |
4 | 4 | 0 → 1 | — | Latah County, Benewah County |
| 36 | SR-19 State Highway |
3 | 3 | 2 → 0 | — | Canyon County |
| 37 | SR-34 State Highway |
3 | 3 | 1 → 1 | — | Caribou County, Franklin County |
| 38 | SR-45 State Highway |
3 | 3 | 0 → 0 | — | Canyon County |
| 39 | SR-57 State Highway |
3 | 2 | 0 → 0 | — | Bonner County |
| 40 | I-184 Interstate |
3 | 2 | 0 → 0 | — | Ada County |
| 41 | SR-167 State Highway |
3 | 1 | 0 → 0 | near Elmore County: 3 deaths map | Elmore County |
Deaths = people killed in crashes on the road, 2020–2024. A crash counts for the first signed Interstate, US or State route of its location; county and unsigned roads are not ranked because their numbers repeat. The stretch is the ~7-mile square with the most deaths on that road. Source: NHTSA FARS.
More for Idaho: most dangerous counties · Idaho accidents today · every state · crash history along your route
Questions
Deadliest roads — FAQ
What is the deadliest highway in Idaho?
US-95 is the deadliest road in Idaho: 101 people died in crashes on it from 2020 to 2024, the worst stretch being near Payette County (8 deaths within about 7 miles). Next: I-84 (90) and US-20 (71). Long, busy highways lead on totals; the deadliest-stretch column shows where on each road the deaths cluster.
Why is there no deaths-per-mile figure?
FARS records where each fatal crash happened but not how long each route is or how much traffic it carries, so we show totals and the worst ~7-mile stretch rather than a rate we would have to estimate.
Where does this data come from?
NHTSA's Fatality Analysis Reporting System, which records every fatal crash on US public roads, for 2020–2024. Each crash is credited to the first signed Interstate, US or State route of its trafficway.