Colorado Wildlife Vehicle Crashes Have Increased
State troopers tracked over 3,900 collisions in 2025 as migration patterns and climate factors drive higher risks.
Updated on Oct. 2, 2026 in Wildlife
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The Colorado State Patrol reported that wildlife-related vehicle crashes have increased steadily across the state since 2021. Troopers responded to more than 3,900 such incidents in 2025, with risks peaking during the autumn months.
Why it matters
Drought conditions and high temperatures have intensified wildlife movement, forcing animals toward lower elevations for mating and migration. This shift increases the likelihood of high-impact road collisions for drivers throughout the state.
Troopers responded to over 3,900 wildlife collisions in 2025, reflecting a consistent annual increase since 2021. High-risk transit routes include Interstate 70, Interstate 25, Highway 160, Highway 50, US 285, Highway 40, and Highway 24.
The players
Colorado State Patrol
The state law enforcement agency responsible for patrolling Colorado highways and documenting traffic safety data.
The details
Wildlife vehicle collisions occur most frequently when animals cross roadways while migrating to lower elevations for the mating season. Drought and heat have created an environment where wildlife and humans interact more frequently, often while animals are distracted by migration behaviors. Deer and elk remain the most frequently struck species, though pronghorn, bears, and marmots are also involved in accidents across the state.
Timeline
2021: Wildlife vehicle collisions began to show a steady increase.
2025: Troopers responded to over 3,900 wildlife vehicle crashes.
Autumn: This season marks the most frequent time for collisions.
The Home Front
This rise in incidents follows a multi-year pattern of increased human-wildlife interaction on Colorado roadways. The data indicates a departure from historical baseline collision rates observed before the current upward trend began in 2021.
When driving during the autumn months, remain vigilant on high-risk routes like I-70 and US 285, especially during dawn and dusk. Plan for potential vehicle maintenance or insurance reviews if you frequently commute through identified high-risk zones.
The takeaway
Wildlife activity is significantly higher during the autumn, requiring increased driver awareness on major mountain highways. Stay alert for deer and elk movement, particularly in regions where drought has pushed populations toward lower elevations.
Further reading
For more information on animal migration and safety, visit Wildlife.
Live Poll
Do you feel adequately prepared to avoid wildlife collisions when driving in your area?
