I-80 in California: fatal crashes
From 2015 to 2024, 404 fatal crashes on I-80 in California killed 454 people, the 7th most of 255 numbered roads in California. In 2024 there were 31 fatal crashes and 34 deaths on the road.
An interstate running through 12 counties of California. All fatal crashes in California. I-80 in every state.
Deaths on I-80 in California by year
| Year | Fatal crashes | Deaths |
|---|---|---|
| 2024 | 31 | 34 |
| 2023 | 45 | 49 |
| 2022 | 36 | 41 |
| 2021 | 50 | 55 |
| 2020 | 52 | 59 |
| 2019 | 46 | 54 |
| 2018 | 31 | 34 |
| 2017 | 39 | 45 |
| 2016 | 41 | 44 |
| 2015 | 33 | 39 |
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 California: the counties with the most fatal crashes
Solano County had the most fatal crashes on I-80 from 2015 to 2024: 113, with 125 deaths. Solano, Contra Costa and Placer counties together held 60% of fatal crashes on I-80 in California from 2015 to 2024; the 8 listed held 99%. Counties are listed from 5 fatal crashes.
| County | 2024 | 2015 to 2024 | Deaths | |
|---|---|---|---|---|
| 1 | Solano County | 7 | 113 | 125 |
| 2 | Contra Costa County | 6 | 66 | 77 |
| 3 | Placer County | 8 | 64 | 67 |
| 4 | Sacramento County | 3 | 54 | 64 |
| 5 | Alameda County | 3 | 37 | 41 |
| 6 | Yolo County | 1 | 24 | 28 |
| 7 | San Francisco County | 3 | 21 | 23 |
| 8 | Nevada County | 0 | 20 | 24 |
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 California
The heaviest slot is Sunday, midnight to 4 am (the night from Saturday), with 36 fatal crashes from 2015 to 2024. The worst hour is midnight to 1 am; the worst month is September.
| Midnight to 4 | 4 to 8 am | 8 to noon | Noon to 4 | 4 to 8 pm | 8 to midnight | |
|---|---|---|---|---|---|---|
| Sun | 9.2 percent, 36 fatal crashes | 3.8 percent, 15 fatal crashes | 1.0 percent, 4 fatal crashes | 1.5 percent, 6 fatal crashes | 3.1 percent, 12 fatal crashes | 2.0 percent, 8 fatal crashes |
| Mon | 2.8 percent, 11 fatal crashes | 3.3 percent, 13 fatal crashes | 1.0 percent, 4 fatal crashes | 3.3 percent, 13 fatal crashes | 0.5 percent, 2 fatal crashes | 1.5 percent, 6 fatal crashes |
| Tue | 2.3 percent, 9 fatal crashes | 2.3 percent, 9 fatal crashes | 1.0 percent, 4 fatal crashes | 1.3 percent, 5 fatal crashes | 0.8 percent, 3 fatal crashes | 2.5 percent, 10 fatal crashes |
| Wed | 2.5 percent, 10 fatal crashes | 2.8 percent, 11 fatal crashes | 0.5 percent, 2 fatal crashes | 1.8 percent, 7 fatal crashes | 0.5 percent, 2 fatal crashes | 2.5 percent, 10 fatal crashes |
| Thu | 3.8 percent, 15 fatal crashes | 2.5 percent, 10 fatal crashes | 2.0 percent, 8 fatal crashes | 1.8 percent, 7 fatal crashes | 1.5 percent, 6 fatal crashes | 3.6 percent, 14 fatal crashes |
| Fri | 3.1 percent, 12 fatal crashes | 1.5 percent, 6 fatal crashes | 1.8 percent, 7 fatal crashes | 1.5 percent, 6 fatal crashes | 2.3 percent, 9 fatal crashes | 2.5 percent, 10 fatal crashes |
| Sat | 4.8 percent, 19 fatal crashes | 3.3 percent, 13 fatal crashes | 1.3 percent, 5 fatal crashes | 1.8 percent, 7 fatal crashes | 3.1 percent, 12 fatal crashes | 3.8 percent, 15 fatal crashes |
By hour
By month
- Jan10.1%
- Feb7.2%
- Mar7.2%
- Apr7.4%
- May7.7%
- Jun6.2%
- Jul7.7%
- Aug7.9%
- Sep12.1%
- Oct9.9%
- Nov9.2%
- Dec7.4%
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 California
19.9 fatal crashes a year per 100 miles over 2015 to 2024, on 203 miles of I-80 in California, against 16.5 for all interstates in California. That ranks 3 of 6 interstates in California and 10 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 California first hit
The first harmful event was a collision with another vehicle in 35%; a fixed object such as a tree, pole or barrier in 32%, a pedestrian in 17%, a parked vehicle in 5.7%.
| First harmful event | Fatal crashes | Share |
|---|---|---|
| Collision with another vehicle | 142 | 35% |
| Fixed object (tree, pole, barrier, ditch) | 128 | 32% |
| Pedestrian | 70 | 17% |
| Parked vehicle | 23 | 5.7% |
| Other | 21 | 5.2% |
| Rollover | 19 | 4.7% |
| Cyclist | 1 | 0.2% |
| 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 California compare with the state
The largest difference from California: from 2015 to 2024, 0.5% of fatal crashes on I-80 in California were at or near an intersection, against 27% across California. Also above the California share: unlit roads at night. Below it: rural roads and pedestrians. Shares of fatal crashes from 2015 to 2024, against the share across all of California. A share is only given over 20 crashes; above or below means more than chance would give on 404 crashes.
| I-80 | California | ||
|---|---|---|---|
| On rural stretches | 25% | 30% | below the California share |
| At or near an intersection | 0.5% | 27% | below the California share |
| In the dark, road unlit | 38% | 25% | above the California share |
| A drinking driver | 27% | 28% | about the same as the California share |
| Speeding | 34% | 30% | about the same as the California share |
| A distracted driver (as recorded) | 3.7% | 4.1% | about the same as the California share |
| Occupants killed unbelted | 40% | 38% | about the same as the California share |
| Hit-and-run | 8.2% | 11% | about the same as the California share |
| A motorcycle involved | 14% | 15% | about the same as the California share |
| Pedestrians among the dead | 22% | 26% | below the California 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 California
- How many fatal crashes have there been on I-80 in California?
- 404 fatal crashes killed 454 people on I-80 in California from 2015 to 2024. In 2024 there were 31 fatal crashes and 34 deaths. Source: NHTSA's Fatality Analysis Reporting System (FARS).
- Where on I-80 in California do the most fatal crashes happen?
- Solano County had the most fatal crashes on I-80 from 2015 to 2024: 113, with 125 deaths. Contra Costa County was second with 66.
- When do fatal crashes on I-80 in California happen most often?
- The heaviest slot from 2015 to 2024 was Sunday, midnight to 4 am (the night from Saturday), with 36 fatal crashes.
- How dangerous is I-80 in California per mile?
- 19.9 fatal crashes a year per 100 miles over 2015 to 2024, on 203 miles of road, against 16.5 for all interstates in California. That ranks 3 of 6 interstates in California and 10 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 California with a page
All fatal crashes in California, 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 California (filed under 14 spellings, such as "I-80", "I-80 CAPITAL CITY FREEWAY", "I-80 CARQUINEZ BRIDGE", "I-80 DWIGHT D EISENHOWER"). 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.