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Interstate 90
Fatal crashes 2015–2024 34Deaths 35Counties 4Latest data year 2024
FARS data are based on police crash reports and other sources; the drunk-driving measure is based on the highest BAC of any driver in the crash. Latest data year: 2024. The route is the trafficway recorded for each crash (FARS TWAY_ID); the same route number in another state has its own page.
Between 2015 and 2024, FARS records 34 fatal crashes on Interstate 90 in Wyoming, with 35 deaths.
That is 3.1% of the 1,111 fatal crashes in Wyoming over the same years. The ten-year crash count fell 41% from 58 in 2005–2014 to 34 in 2015–2024.
The crashes were concentrated in Campbell County (10), Crook County (8) and Johnson County (8) and 1 other county.
23.5% of the crashes had a driver reported as drinking (Wyoming: 32.5%) and 14.7% had a speeding-related driver (35.4%); pedestrians were 2.9% and motorcyclists 11.4% of those killed.
Fatal crashes per year
Route identification in FARS is consistent from 2000; earlier years are not shown. Shaded band: the ten-year window used for the shares below.
Compared with all fatal crashes in Wyoming
| Measure | Interstate 90 | Wyoming |
|---|---|---|
| Fatal crashes, 2015–2024 | 34 | 1,111 |
| Deaths, 2015–2024 | 35 | 1,260 |
| Deaths per fatal crash | 1.0 | 1.1 |
| Share of state fatal crashes | 3.1% | 100% |
| Change vs previous ten years | -41% | -14% |
Factor shares
Counties along the route
| # | County | Fatal crashes on I-90 | Share of route | County total, all roads |
|---|---|---|---|---|
| 1 | Campbell County | 10 | 29% | 71 |
| 2 | Crook County | 8 | 24% | 37 |
| 3 | Johnson County | 8 | 24% | 34 |
| 4 | Sheridan County | 8 | 24% | 30 |
Hour of day
Share of fatal crashes on Interstate 90 beginning in each hour, 2015–2024; tick marks the Wyoming share for all roads.
Where along the route
| Mile marker range | Fatal crashes | Share |
|---|---|---|
| Mile 35–40 | 3 | 9% |
| Mile 40–45 | 3 | 9% |
| Mile 0–5 | 2 | 6% |
| Mile 30–35 | 2 | 6% |
| Mile 70–75 | 2 | 6% |
| Mile 125–130 | 2 | 6% |
Five-mile bins by FARS milepoint, the six with the most fatal crashes; 100% of crashes on the route have a milepoint. Milepoints are as recorded by the state and can restart at county or district lines.
Other routes in Wyoming
- Interstate 80 171
- Interstate 25 84
- US Route 26 43
- US Route 20 38
- US Route 85 35
- US Route 30 31
- US Route 287 30
- State Route 59 28
- US Route 14 27
- US Route 16 26
All routes and counties in Wyoming
Questions and answers
How many fatal crashes have there been on Interstate 90 in Wyoming?
34 fatal crashes with 35 deaths over 2015–2024, per NHTSA's FARS. The route is the trafficway recorded for the crash; the same numbered route in another state has its own page.
Which counties along Interstate 90 had the most fatal crashes?
Campbell County (10), Crook County (8), Johnson County (8) and Sheridan County (8).
What share of crashes on Interstate 90 involved alcohol or speeding?
23.5% had a driver reported as drinking and 14.7% a speeding-related driver, against 32.5% and 35.4% for all fatal crashes in Wyoming.
When do fatal crashes happen on Interstate 90?
44.1% of the crashes were between 6pm and 6am. The hour chart on this page shows the full distribution.
Provenance
Source: NHTSA Fatality Analysis Reporting System, annual national CSV files 2000–2024 (accident, vehicle and person tables), public domain. Route pages are built for signed Interstate, US and state routes with at least 20 fatal crashes in 2015–2024. Data through 31 Dec 2024; generated 30 Sep 2026. See methodology and corrections.