I-80 in Wyoming: fatal crashes
From 2015 to 2024, 171 fatal crashes on I-80 in Wyoming killed 199 people, the most of any numbered road in Wyoming. In 2024 there were 6 fatal crashes and 6 deaths on the road.
An interstate running through 5 counties of Wyoming. All fatal crashes in Wyoming. I-80 in every state.
Deaths on I-80 in Wyoming by year
| Year | Fatal crashes | Deaths |
|---|---|---|
| 2024 | 6 | 6 |
| 2023 | 26 | 34 |
| 2022 | 20 | 24 |
| 2021 | 13 | 14 |
| 2020 | 16 | 17 |
| 2019 | 26 | 31 |
| 2018 | 15 | 16 |
| 2017 | 17 | 19 |
| 2016 | 21 | 24 |
| 2015 | 11 | 14 |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Where on I-80 in Wyoming: the counties with the most fatal crashes
Sweetwater County had the most fatal crashes on I-80 from 2015 to 2024: 63, with 68 deaths. Sweetwater, Carbon and Uinta counties together held 73% of fatal crashes on I-80 in Wyoming from 2015 to 2024. Counties are listed from 5 fatal crashes.
| County | 2024 | 2015 to 2024 | Deaths | |
|---|---|---|---|---|
| 1 | Sweetwater County | 1 | 63 | 68 |
| 2 | Carbon County | 3 | 35 | 42 |
| 3 | Uinta County | 1 | 26 | 34 |
| 4 | Albany County | 0 | 26 | 28 |
| 5 | Laramie County | 1 | 21 | 27 |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
When fatal crashes happen on I-80 in Wyoming
The heaviest slot is Wednesday, 8 am to noon, with 10 fatal crashes from 2015 to 2024. The worst hour is 3 pm to 4 pm; the worst month is March.
| Midnight to 4 | 4 to 8 am | 8 to noon | Noon to 4 | 4 to 8 pm | 8 to midnight | |
|---|---|---|---|---|---|---|
| Sun | 1.8 percent, 3 fatal crashes | 2.9 percent, 5 fatal crashes | 2.9 percent, 5 fatal crashes | 4.7 percent, 8 fatal crashes | 2.9 percent, 5 fatal crashes | 1.2 percent, 2 fatal crashes |
| Mon | 2.3 percent, 4 fatal crashes | 2.3 percent, 4 fatal crashes | 2.9 percent, 5 fatal crashes | 2.3 percent, 4 fatal crashes | 1.8 percent, 3 fatal crashes | 2.9 percent, 5 fatal crashes |
| Tue | 1.8 percent, 3 fatal crashes | 1.8 percent, 3 fatal crashes | 0.6 percent, 1 fatal crash | 2.9 percent, 5 fatal crashes | 2.3 percent, 4 fatal crashes | 0.6 percent, 1 fatal crash |
| Wed | 2.3 percent, 4 fatal crashes | 3.5 percent, 6 fatal crashes | 5.8 percent, 10 fatal crashes | 4.7 percent, 8 fatal crashes | 1.8 percent, 3 fatal crashes | 2.3 percent, 4 fatal crashes |
| Thu | 1.8 percent, 3 fatal crashes | 2.3 percent, 4 fatal crashes | 1.8 percent, 3 fatal crashes | 4.1 percent, 7 fatal crashes | 2.9 percent, 5 fatal crashes | 3.5 percent, 6 fatal crashes |
| Fri | 2.9 percent, 5 fatal crashes | 0.6 percent, 1 fatal crash | 2.3 percent, 4 fatal crashes | 2.3 percent, 4 fatal crashes | 1.8 percent, 3 fatal crashes | 1.2 percent, 2 fatal crashes |
| Sat | 1.2 percent, 2 fatal crashes | 1.2 percent, 2 fatal crashes | 2.9 percent, 5 fatal crashes | 3.5 percent, 6 fatal crashes | 0.6 percent, 1 fatal crash | 1.8 percent, 3 fatal crashes |
By hour
By month
- Jan8.2%
- Feb4.1%
- Mar12.3%
- Apr11.1%
- May2.9%
- Jun7.0%
- Jul9.9%
- Aug11.7%
- Sep7.6%
- Oct8.2%
- Nov11.1%
- Dec5.8%
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Fatal crashes per mile on I-80 in Wyoming
4.2 fatal crashes a year per 100 miles over 2015 to 2024, on 403 miles of I-80 in Wyoming, against 3.6 for all interstates in Wyoming. That ranks 1 of 2 interstates in Wyoming and 146 of 172 interstate pages on this site.
Mileage from the FHWA Interstate route log (table 1), the only figure here not counted from FARS. Crashes per mile of road, not per vehicle: FARS records crashes, not traffic.
What fatal crashes on I-80 in Wyoming first hit
The first harmful event was a collision with another vehicle in 31%; a rollover in 31%, a fixed object such as a tree, pole or barrier in 19%, a parked vehicle in 6.4%.
| First harmful event | Fatal crashes | Share |
|---|---|---|
| Collision with another vehicle | 53 | 31% |
| Rollover | 53 | 31% |
| Fixed object (tree, pole, barrier, ditch) | 33 | 19% |
| Parked vehicle | 11 | 6.4% |
| Other | 11 | 6.4% |
| Pedestrian | 9 | 5.3% |
| Cyclist | 1 | 0.6% |
| Not reported | 0 | 0.0% |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
How fatal crashes on I-80 in Wyoming compare with the state
The largest difference from Wyoming: from 2015 to 2024, 13% of fatal crashes on I-80 in Wyoming were with a drinking driver, against 33% across Wyoming. Below the Wyoming share: intersections and motorcycles. Shares of fatal crashes from 2015 to 2024, against the share across all of Wyoming. A share is only given over 20 crashes; above or below means more than chance would give on 171 crashes.
| I-80 | Wyoming | ||
|---|---|---|---|
| On rural stretches | 86% | 81% | about the same as the Wyoming share |
| At or near an intersection | 0.0% | 9.5% | below the Wyoming share |
| In the dark, road unlit | 37% | 33% | about the same as the Wyoming share |
| A drinking driver | 13% | 33% | below the Wyoming share |
| Speeding | 33% | 35% | about the same as the Wyoming share |
| A distracted driver (as recorded) | 8.8% | 9.6% | about the same as the Wyoming share |
| Occupants killed unbelted | 56% | 61% | about the same as the Wyoming share |
| Hit-and-run | 0.6% | 0.8% | about the same as the Wyoming share |
| A motorcycle involved | 6.4% | 16% | below the Wyoming share |
| Pedestrians among the dead | 7.0% | 5.6% | about the same as the Wyoming share |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Questions about fatal crashes on I-80 in Wyoming
- How many fatal crashes have there been on I-80 in Wyoming?
- 171 fatal crashes killed 199 people on I-80 in Wyoming from 2015 to 2024. In 2024 there were 6 fatal crashes and 6 deaths. Source: NHTSA's Fatality Analysis Reporting System (FARS).
- Where on I-80 in Wyoming do the most fatal crashes happen?
- Sweetwater County had the most fatal crashes on I-80 from 2015 to 2024: 63, with 68 deaths. Carbon County was second with 35.
- When do fatal crashes on I-80 in Wyoming happen most often?
- The heaviest slot from 2015 to 2024 was Wednesday, 8 am to noon, with 10 fatal crashes.
- How dangerous is I-80 in Wyoming per mile?
- 4.2 fatal crashes a year per 100 miles over 2015 to 2024, on 403 miles of road, against 3.6 for all interstates in Wyoming. That ranks 1 of 2 interstates in Wyoming and 146 of 172 interstate pages on this site. FARS records crashes, not traffic, so this is crashes per mile of road, not per vehicle.
Other roads in Wyoming with a page
All fatal crashes in Wyoming, with every road ranked.
Where the I-80 numbers come from
Counted from NHTSA's Fatality Analysis Reporting System, 2024 Annual Report File: every fatal crash whose road NHTSA filed as I-80 in Wyoming (filed under 15 spellings, such as "I-80", "I-80 US-30", "I-80 / US-30", "I-80 INTCHG 89 WB ON"). Ramps, frontage and service roads are left out. Where two routes share a road, NHTSA files each crash under one of them, so a shared stretch counts on one route only. A fatal crash is one in which someone died within 30 days. Totals in state and news reports for a road usually differ: they include ramps and frontage roads, or count from preliminary reports. The full method.