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US Route 20
Fatal crashes 2015–2024 38Deaths 45Counties 6Latest 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 38 fatal crashes on US Route 20 in Wyoming, with 45 deaths.
That is 3.4% of the 1,111 fatal crashes in Wyoming over the same years. The ten-year crash count fell 7% from 41 in 2005–2014 to 38 in 2015–2024.
The crashes were concentrated in Natrona County (15), Fremont County (8) and Hot Springs County (7) and 3 other counties.
34.2% of the crashes had a driver reported as drinking (Wyoming: 32.5%) and 21.1% had a speeding-related driver (35.4%); pedestrians were 4.4% and motorcyclists 24.4% 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 | US Route 20 | Wyoming |
|---|---|---|
| Fatal crashes, 2015–2024 | 38 | 1,111 |
| Deaths, 2015–2024 | 45 | 1,260 |
| Deaths per fatal crash | 1.2 | 1.1 |
| Share of state fatal crashes | 3.4% | 100% |
| Change vs previous ten years | -7% | -14% |
Factor shares
Counties along the route
| # | County | Fatal crashes on US-20 | Share of route | County total, all roads |
|---|---|---|---|---|
| 1 | Natrona County | 15 | 39% | 86 |
| 2 | Fremont County | 8 | 21% | 107 |
| 3 | Hot Springs County | 7 | 18% | 13 |
| 4 | Converse County | 5 | 13% | 54 |
| 5 | Washakie County | 2 | 5% | 8 |
| 6 | Niobrara County | 1 | 3% | 16 |
Hour of day
Share of fatal crashes on US Route 20 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 55–60 | 3 | 8% |
| Mile 110–115 | 3 | 8% |
| Mile 120–125 | 3 | 8% |
| Mile 175–180 | 3 | 8% |
| Mile 25–30 | 2 | 5% |
| Mile 40–45 | 2 | 5% |
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 85 35
- Interstate 90 34
- 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 US Route 20 in Wyoming?
38 fatal crashes with 45 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 US Route 20 had the most fatal crashes?
Natrona County (15), Fremont County (8), Hot Springs County (7), Converse County (5) and Washakie County (2).
What share of crashes on US Route 20 involved alcohol or speeding?
34.2% had a driver reported as drinking and 21.1% a speeding-related driver, against 32.5% and 35.4% for all fatal crashes in Wyoming.
When do fatal crashes happen on US Route 20?
34.2% 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.