NHTSA FARS 2020–2024
Deadliest Highways and Roads in Colorado
Quick answer: I-25 is the deadliest road in Colorado: 236 people died in crashes on it from 2020 to 2024, the worst stretch being near Adams County (17 deaths within about 7 miles). Next: I-70 (189) and US-287 (123).
| # | Road | Deaths | Fatal crashes | 2020 · 2024 | Deadliest ~7-mile stretch | Counties |
|---|---|---|---|---|---|---|
| 1 | I-25 Interstate |
236 | 213 | 42 → 45 | near Adams County: 17 deaths map | El Paso County, Pueblo County, Denver County, Douglas County |
| 2 | I-70 Interstate · live page |
189 | 173 | 29 → 36 | near Denver County: 14 deaths map | Denver County, Arapahoe County, Jefferson County, Garfield County |
| 3 | US-287 U.S. Highway |
123 | 102 | 18 → 24 | near Adams County: 27 deaths map | Larimer County, Boulder County, Adams County, Prowers County |
| 4 | US-40 U.S. Highway |
112 | 99 | 21 → 29 | near Denver County: 19 deaths map | Denver County, Jefferson County, Cheyenne County, Routt County |
| 5 | US-50 U.S. Highway |
98 | 90 | 22 → 14 | near Pueblo County: 13 deaths map | Pueblo County, Fremont County, Gunnison County, Delta County |
| 6 | US-85 U.S. Highway |
83 | 72 | 16 → 23 | near Weld County: 11 deaths map | Weld County, Adams County, Douglas County, Denver County |
| 7 | US-34 U.S. Highway |
79 | 66 | 18 → 17 | near Weld County: 12 deaths map | Weld County, Larimer County, Morgan County, Washington County |
| 8 | US-160 U.S. Highway |
75 | 69 | 8 → 10 | near Montezuma County: 10 deaths map | La Plata County, Montezuma County, Mineral County, Archuleta County |
| 9 | US-24 U.S. Highway |
73 | 64 | 14 → 14 | near El Paso County: 9 deaths map | El Paso County, Park County, Teller County, Chaffee County |
| 10 | US-285 U.S. Highway |
59 | 55 | 13 → 13 | near Arapahoe County: 9 deaths map | Jefferson County, Park County, Saguache County, Arapahoe County |
| 11 | I-76 Interstate |
59 | 56 | 9 → 13 | near Adams County: 7 deaths map | Adams County, Morgan County, Weld County, Logan County |
| 12 | US-6 U.S. Highway |
57 | 52 | 14 → 14 | near Jefferson County: 10 deaths map | Jefferson County, Mesa County, Garfield County, Denver County |
| 13 | SR-83 State Highway |
46 | 42 | 13 → 8 | near Arapahoe County: 8 deaths map | Douglas County, Arapahoe County, El Paso County, Denver County |
| 14 | US-36 U.S. Highway |
32 | 30 | 3 → 4 | near Jefferson County: 6 deaths map | Boulder County, Jefferson County, Arapahoe County, Adams County |
| 15 | US-550 U.S. Highway |
30 | 29 | 6 → 8 | near Montrose County: 4 deaths map | La Plata County, Ouray County, Montrose County, San Juan County |
| 16 | SR-95 State Highway |
30 | 28 | 2 → 4 | near Denver County: 15 deaths map | Denver County, Jefferson County, Adams County |
| 17 | SR-14 State Highway |
29 | 26 | 1 → 4 | near Weld County: 7 deaths map | Weld County, Larimer County, Jackson County, Logan County |
| 18 | SR-30 State Highway |
29 | 25 | 4 → 6 | near Arapahoe County: 22 deaths map | Arapahoe County, Denver County |
| 19 | SR-119 State Highway |
28 | 24 | 6 → 5 | near Boulder County: 8 deaths map | Boulder County, Weld County, Gilpin County |
| 20 | SR-121 State Highway |
27 | 27 | 8 → 2 | near Jefferson County: 12 deaths map | Jefferson County, Broomfield County |
| 21 | I-225 Interstate |
27 | 22 | 6 → 5 | near Arapahoe County: 16 deaths map | Arapahoe County, Denver County, Adams County |
| 22 | SR-88 State Highway |
24 | 23 | 5 → 6 | near Denver County: 16 deaths map | Denver County, Arapahoe County |
| 23 | SR-115 State Highway |
23 | 21 | 4 → 6 | near Fremont County: 6 deaths map | Fremont County, El Paso County |
| 24 | SR-470 State Highway |
22 | 21 | 1 → 7 | near Jefferson County: 4 deaths map | Jefferson County, Douglas County, Adams County, Arapahoe County |
| 25 | SR-391 State Highway |
20 | 20 | 4 → 5 | near Jefferson County: 13 deaths map | Jefferson County |
| 26 | SR-71 State Highway |
18 | 18 | 3 → 4 | near Lincoln County: 4 deaths map | Lincoln County, Morgan County, Weld County, Jefferson County |
| 27 | SR-141 State Highway |
18 | 17 | 3 → 2 | near San Miguel County: 5 deaths map | Mesa County, San Miguel County, Montrose County |
| 28 | SR-2 State Highway |
18 | 17 | 3 → 5 | near Denver County: 14 deaths map | Denver County |
| 29 | SR-96 State Highway |
18 | 17 | 8 → 0 | near Pueblo County: 7 deaths map | Pueblo County, Custer County, Crowley County, Kiowa County |
| 30 | SR-45 State Highway |
15 | 13 | 0 → 4 | near Pueblo County: 8 deaths map | Pueblo County |
| 31 | SR-392 State Highway |
14 | 14 | 4 → 5 | near Weld County: 5 deaths map | Weld County, Larimer County |
| 32 | SR-21 State Highway |
14 | 14 | 2 → 2 | near El Paso County: 6 deaths map | El Paso County |
| 33 | US-491 U.S. Highway |
12 | 10 | 2 → 2 | near Montezuma County: 4 deaths map | Montezuma County, Dolores County |
| 34 | SR-82 State Highway |
12 | 11 | 3 → 3 | near Garfield County: 3 deaths map | Pitkin County, Garfield County, Lake County |
| 35 | SR-9 State Highway |
12 | 12 | 1 → 2 | — | Summit County, Park County, Grand County, Fremont County |
| 36 | SR-145 State Highway |
12 | 12 | 1 → 3 | near San Miguel County: 4 deaths map | San Miguel County, Montezuma County, Dolores County |
| 37 | SR-69 State Highway |
11 | 11 | 1 → 2 | — | Huerfano County, Custer County, Fremont County |
| 38 | SR-65 State Highway |
11 | 10 | 3 → 3 | near Delta County: 5 deaths map | Delta County, Mesa County |
| 39 | I-270 Interstate |
11 | 11 | 1 → 0 | near Adams County: 9 deaths map | Adams County, Denver County |
| 40 | SR-94 State Highway |
10 | 9 | 3 → 0 | near El Paso County: 4 deaths map | El Paso County |
| 41 | SR-7 State Highway |
10 | 10 | 1 → 1 | near Adams County: 5 deaths map | Adams County, Boulder County, Larimer County, Broomfield County |
| 42 | SR-52 State Highway |
10 | 10 | 2 → 2 | near Weld County: 3 deaths map | Weld County, Morgan County |
| 43 | SR-72 State Highway |
10 | 10 | 0 → 4 | near Jefferson County: 3 deaths map | Jefferson County, Boulder County |
| 44 | SR-93 State Highway |
9 | 8 | 3 → 2 | near Jefferson County: 3 deaths map | Boulder County, Jefferson County |
| 45 | SR-66 State Highway |
8 | 8 | 2 → 1 | near Boulder County: 3 deaths map | Weld County, Boulder County |
| 46 | SR-60 State Highway |
8 | 6 | 1 → 1 | near Weld County: 6 deaths map | Weld County |
| 47 | SR-13 State Highway |
8 | 8 | 0 → 3 | — | Rio Blanco County, Garfield County, Moffat County |
| 48 | SR-92 State Highway |
7 | 7 | 2 → 0 | — | Delta County, Montrose County |
| 49 | SR-70 State Highway |
7 | 7 | 4 → 2 | near Mesa County: 3 deaths map | Mesa County, Garfield County |
| 50 | SR-91 State Highway |
7 | 6 | 2 → 1 | near Lake County: 3 deaths map | Lake County, Summit County |
| 51 | SR-17 State Highway |
7 | 6 | 1 → 2 | — | Alamosa County, Saguache County, Conejos County |
| 52 | SR-67 State Highway |
7 | 7 | 1 → 0 | near Douglas County: 4 deaths map | Douglas County, Fremont County, Teller County, Custer County |
| 53 | SR-149 State Highway |
6 | 5 | 1 → 0 | near Hinsdale County: 3 deaths map | Hinsdale County, Mineral County, Gunnison County |
| 54 | SR-16 State Highway |
6 | 5 | 2 → 2 | near El Paso County: 6 deaths map | El Paso County |
| 55 | US-385 U.S. Highway |
6 | 5 | 3 → 2 | — | Yuma County, Cheyenne County, Phillips County |
| 56 | SR-257 State Highway |
6 | 6 | 0 → 3 | near Weld County: 4 deaths map | Weld County |
| 57 | SR-86 State Highway |
6 | 5 | 0 → 0 | — | Elbert County, Douglas County |
| 58 | SR-135 State Highway |
5 | 4 | 3 → 1 | near Gunnison County: 3 deaths map | Gunnison County |
| 59 | SR-133 State Highway |
5 | 4 | 2 → 0 | — | Delta County, Pitkin County |
| 60 | SR-184 State Highway |
5 | 5 | 0 → 1 | near Montezuma County: 3 deaths map | Montezuma County |
Deaths = people killed in crashes on the road, 2020–2024. A crash counts for the first signed Interstate, US or State route of its location; county and unsigned roads are not ranked because their numbers repeat. The stretch is the ~7-mile square with the most deaths on that road. Source: NHTSA FARS.
More for Colorado: most dangerous counties · Colorado accidents today · every state · crash history along your route
Questions
Deadliest roads — FAQ
What is the deadliest highway in Colorado?
I-25 is the deadliest road in Colorado: 236 people died in crashes on it from 2020 to 2024, the worst stretch being near Adams County (17 deaths within about 7 miles). Next: I-70 (189) and US-287 (123). Long, busy highways lead on totals; the deadliest-stretch column shows where on each road the deaths cluster.
Why is there no deaths-per-mile figure?
FARS records where each fatal crash happened but not how long each route is or how much traffic it carries, so we show totals and the worst ~7-mile stretch rather than a rate we would have to estimate.
Where does this data come from?
NHTSA's Fatality Analysis Reporting System, which records every fatal crash on US public roads, for 2020–2024. Each crash is credited to the first signed Interstate, US or State route of its trafficway.