Give Wildlife a Brake This Spring

Spring is here and wildlife are on the move across our valley!

Wildlife-Vehicle Collision Hotspot Maps for Teton County

The maps indicate where wildlife-vehicle collisions involving elk, moose and deer most frequently occurred between 2011 and 2022. Roadkill data used for maps is a combination of Nature Mapping Jackson Hole observations and carcasses recorded by the Wyoming Department of Transportation and the Wyoming Game and Fish Department. 

*Due to exclusionary fencing and wildlife-underpasses installed on S. Highway 89 between 2018-2022, we anticipate hotspots shown between Hoback Junction and Rafter J may be weighted by more frequent collisions (especially with mule deer) prior to the construction of these mitigation measures. Early data indicates collisions on this stretch of highway have been reduced by at least 30% in recent years. 

Test Your Wildlife-Vehicle Collision Knowledge

How many moose are in Jackson Hole?

volunteers counted 240

Wyoming Game and Fish Department and Jackson Hole Wildlife Foundation volunteers surveyed 240 moose in Jackson Hole in 2021. The Jackson Moose Herd has dwindled by 70% over the last 30 years.

How many moose are killed by vehicles in Teton County year?

Approximately 20

This does not include animal-vehicle collisions that go unreported and does not include moose-vehicle collisions in Grand Teton National Park.

What is the cost to the driver and the community when a moose
is hit?

$30,773

This cost includes vehicle repair costs, human injury/fatality costs, towing, accident attendance and investigation, the animal’s value, carcass removal and disposal costs. This financial estimate was made in a Report to Congress in 2008; costs are likely much higher now.

What is the likelihood of human death in traffic accidents involving moose compared to accidents with deer?

Traffic accidents involving moose are 13 times more likely to result in a human death than crashes with deer.

What are statistically the worst months in Teton County for wildlife-vehicle collisions?

December
January
February

What is the worst day of the year in the United States for wildlife-vehicle collisions?

The end of daylight saving time (first Sunday of November).

  • Ungulates (hoofed mammals like deer, elk and moose) are migrating to winter ranges, often crossing roads in the process
  • Ungulates are being hunted in much of the country which can lead to distracted behavior as they try to evade hunters
  • Ungulates are mating which can lead to distracted behavior as they pursue mates
  • Peak commuter traffic times change in most states by one hour (“fall back”); believe it or not, animals adapt to our peak traffic times by avoiding them and when we change them overnight they are not able to adapt to the immediate shift

Give Wildlife a Brake

Our community benefits when we all drive responsibly. Learn how you can avoid an accident and save our wildlife.

Our Work

Learn more about our Give Wildlife a Brake projects

Photo Credits:

Henry Holdsworth
Mark Gocke
Steve Morriss
Sava Malachowski
Leine Stikkel
Tim Griffith
Jon Mobeck

Jackson Hole Wildlife Foundation

Office Location:
25 S. Willow St., Suite 10
Jackson, WY 83001

Mailing Address:
PO Box 8042
Jackson, WY 83002

(307) 739-0968
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