I-25 in Colorado: fatal crashes
From 2015 to 2024, 331 fatal crashes on I-25 in Colorado killed 367 people, the most of any numbered road in Colorado. In 2024 there were 35 fatal crashes and 37 deaths on the road.
An interstate running through 11 counties of Colorado. All fatal crashes in Colorado.
Deaths on I-25 in Colorado by year
| Year | Fatal crashes | Deaths |
|---|---|---|
| 2024 | 35 | 37 |
| 2023 | 28 | 32 |
| 2022 | 42 | 50 |
| 2021 | 41 | 43 |
| 2020 | 30 | 34 |
| 2019 | 23 | 26 |
| 2018 | 36 | 38 |
| 2017 | 34 | 36 |
| 2016 | 35 | 41 |
| 2015 | 27 | 30 |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Where on I-25 in Colorado: the counties with the most fatal crashes
El Paso County County had the most fatal crashes on I-25 from 2015 to 2024: 85, with 90 deaths. El Paso, Pueblo and Larimer counties together held 53% of fatal crashes in I-25 in Colorado from 2015 to 2024; the 10 listed held 99%. Counties are listed from 5 fatal crashes.
| County | 2024 | 2015 to 2024 | Deaths | |
|---|---|---|---|---|
| 1 | El Paso County | 13 | 85 | 90 |
| 2 | Pueblo County | 8 | 56 | 63 |
| 3 | Larimer County | 5 | 35 | 42 |
| 4 | Adams County | 2 | 34 | 36 |
| 5 | Weld County | 0 | 29 | 34 |
| 6 | Denver County | 2 | 29 | 30 |
| 7 | Douglas County | 3 | 27 | 31 |
| 8 | Huerfano County | 0 | 13 | 16 |
| 9 | Las Animas County | 1 | 13 | 14 |
| 10 | Arapahoe County | 0 | 7 | 8 |
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-25 in Colorado
The heaviest slot is Sunday, midnight to 4 am, with 21 fatal crashes from 2015 to 2024. The worst hour is midnight to 1 am; the worst month is August.
| Midnight to 4 | 4 to 8 am | 8 to noon | Noon to 4 | 4 to 8 pm | 8 to midnight | |
|---|---|---|---|---|---|---|
| Sun | 6.3 percent, 21 fatal crashes | 3.3 percent, 11 fatal crashes | 1.2 percent, 4 fatal crashes | 2.7 percent, 9 fatal crashes | 3.9 percent, 13 fatal crashes | 2.4 percent, 8 fatal crashes |
| Mon | 3.9 percent, 13 fatal crashes | 2.7 percent, 9 fatal crashes | 2.4 percent, 8 fatal crashes | 2.7 percent, 9 fatal crashes | 2.1 percent, 7 fatal crashes | 1.2 percent, 4 fatal crashes |
| Tue | 1.5 percent, 5 fatal crashes | 2.7 percent, 9 fatal crashes | 0.9 percent, 3 fatal crashes | 2.7 percent, 9 fatal crashes | 1.2 percent, 4 fatal crashes | 1.8 percent, 6 fatal crashes |
| Wed | 1.2 percent, 4 fatal crashes | 2.4 percent, 8 fatal crashes | 1.5 percent, 5 fatal crashes | 1.5 percent, 5 fatal crashes | 3.3 percent, 11 fatal crashes | 1.8 percent, 6 fatal crashes |
| Thu | 2.4 percent, 8 fatal crashes | 1.5 percent, 5 fatal crashes | 1.8 percent, 6 fatal crashes | 2.4 percent, 8 fatal crashes | 2.4 percent, 8 fatal crashes | 3.3 percent, 11 fatal crashes |
| Fri | 1.5 percent, 5 fatal crashes | 1.5 percent, 5 fatal crashes | 1.5 percent, 5 fatal crashes | 2.4 percent, 8 fatal crashes | 2.7 percent, 9 fatal crashes | 2.1 percent, 7 fatal crashes |
| Sat | 4.8 percent, 16 fatal crashes | 1.5 percent, 5 fatal crashes | 3.0 percent, 10 fatal crashes | 3.3 percent, 11 fatal crashes | 1.5 percent, 5 fatal crashes | 2.4 percent, 8 fatal crashes |
By hour
By month
- Jan6.9%
- Feb5.7%
- Mar6.9%
- Apr7.3%
- May6.6%
- Jun10.3%
- Jul8.5%
- Aug12.7%
- Sep10.9%
- Oct10.6%
- Nov7.6%
- Dec6.0%
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-25 in Colorado
11.09 fatal crashes a year per 100 miles over 2015 to 2024, on 299 miles of I-25 in Colorado, against 7.93 for all interstates in Colorado. That ranks 1 of 3 interstates in Colorado and 59 of 171 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-25 in Colorado first hit
The first harmful event was a collision with another vehicle in 33%; a fixed object such as a tree, pole or barrier in 28%, a rollover in 17%, a pedestrian in 14%.
| First harmful event | Fatal crashes | Share |
|---|---|---|
| Collision with another vehicle | 108 | 33% |
| Fixed object (tree, pole, barrier, ditch) | 94 | 28% |
| Rollover | 57 | 17% |
| Pedestrian | 47 | 14% |
| Other | 20 | 6.0% |
| Parked vehicle | 5 | 1.5% |
| Cyclist | 0 | 0.0% |
| 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-25 in Colorado compare with the state
A drinking driver was recorded in 31% of fatal crashes in I-25 in Colorado from 2015 to 2024, below the Colorado share of 34%; speeding in 26%, below the Colorado share of 35%; a hit-and-run in 5.4%, about the Colorado share; 60% of passenger-vehicle occupants killed with belt use known were unbelted, above the Colorado share of 54%. Shares of fatal crashes from 2015 to 2024, against the share across all of Colorado. A share is only given over 20 crashes.
| I-25 | Colorado | ||
|---|---|---|---|
| On rural stretches | 32% | 39% | below the Colorado share |
| At or near an intersection | 0.0% | 32% | below the Colorado share |
| In the dark, road unlit | 23% | 21% | above the Colorado share |
| A drinking driver | 31% | 34% | below the Colorado share |
| Speeding | 26% | 35% | below the Colorado share |
| Occupants killed unbelted | 60% | 54% | above the Colorado share |
| Hit-and-run | 5.4% | 6.1% | about the same as the Colorado share |
| A motorcycle involved | 14% | 21% | below the Colorado share |
| Pedestrians among the dead | 15% | 14% | above the Colorado 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 in I-25 in Colorado
- How many fatal crashes have there been on I-25 in Colorado?
- 331 fatal crashes killed 367 people on I-25 in Colorado from 2015 to 2024. In 2024 there were 35 fatal crashes and 37 deaths.
- Where on I-25 in Colorado do the most fatal crashes happen?
- El Paso County had the most fatal crashes on I-25 from 2015 to 2024: 85, with 90 deaths. Pueblo County was second with 56.
- When do fatal crashes on I-25 in Colorado happen most often?
- The heaviest slot from 2015 to 2024 was Sunday, midnight to 4 am, with 21 fatal crashes.
- How dangerous is I-25 in Colorado per mile?
- 11.09 fatal crashes a year per 100 miles over 2015 to 2024, on 299 miles of road, against 7.93 for all interstates in Colorado. That ranks 1 of 3 interstates in Colorado and 59 of 171 interstate pages on this site. FARS records crashes, not traffic, so this is crashes per mile of road, not per vehicle.
Other roads in Colorado with a page
- I-70
- I-76
- State Highway 121
- State Highway 14
- State Highway 30
- State Highway 470
- State Highway 83
- State Highway 88
- State Highway 95
- US 160
- US 24
- US 285
All fatal crashes in Colorado, with every road ranked.
Where the I-25 numbers come from
Counted from NHTSA's Fatality Analysis Reporting System, 2024 Annual Report File: every fatal crash whose road NHTSA filed as I-25 in Colorado (filed under 3 spellings, such as "I-25", "I-25 HOV LANE", "I-25 HOV LN"). Ramps, frontage and service roads are left out. A fatal crash is one in which someone died within 30 days. The full method.