Wildlife-Vehicle Collisions Are a Big and Costly Problem and Congress Can Help

Surface transportation bill could be a win for people, animals, and government

Navigate to:

Wildlife-Vehicle Collisions Are a Big and Costly Problem and Congress Can Help
Pronghorn crossing
Pronghorn cross a highway in western Wyoming.
Joe Riis National Geographic Creative

An estimated 1 million to 2 million crashes between motor vehicles and large animals such as deer occur every year in the U.S., causing approximately 200 human deaths, 26,000 injuries, and at least $8 billion in property damage and other costs. In rural states such as Wyoming, wildlife-vehicle crashes represent almost 20% of reported collisions. The cost to wildlife also is significant. With wildlife corridors often blocked or impeded by roads and highways, economically important species such as elk and mule deer are cut off from seasonal migration routes, threatening population stability. Fortunately, transportation infrastructure can help to resolve these problems.

As researchers amass more and better data regarding wildlife movements and collision hot spots, experts and policymakers know where and how to maximize return on investments in wildlife-friendly transportation infrastructure that will benefit humans and wildlife alike. That scientific advancement, coupled with strong bipartisan support for reducing these collisions and conserving migration corridors, validates the need for increased federal efforts to address this issue.

Wildlife-vehicle collisions are a major issue in many states, especially those with large rural populations. Insurance giant State Farm looked at data between July 1, 2019, and June 20, 2020, and compared per capita animal-automobile collisions across states. West Virginia ranked first in the nation; residents there have a 1 in 37 chance of hitting an animal with their cars in a given year. Montana, Pennsylvania, and South Dakota are next in line, and many Western, Midwestern, and Southern states round out the top 20.

Top 20 States for Risk of Wildlife-Vehicle Collisions

  1. West Virginia
  2. Montana
  3. Pennsylvania
  4. South Dakota
  5. Michigan
  6. Wisconsin
  7. Iowa
  8. Mississippi
  9. Minnesota
  10. Wyoming
  11. South Carolina
  12. Virginia
  13. North Dakota
  14. Missouri
  15. Arkansas
  16. Kentucky
  17. Georgia
  18. Kansas
  19. Alabama
  20. Nebraska

Source: https://newsroom.statefarm.com/animal-collision/

The Pew Charitable Trusts encourages Congress to address this issue now, and lawmakers can start with a smart update of the Fixing America’s Surface Transportation (FAST) Act of 2015, the premier program for developing and repairing the nation’s transportation infrastructure. The program, which is updated every five years through legislation, is set to expire Sept. 30. Proposed updates include funding for wildlife crossings to help relieve states, tribes, and localities from some of the costs of constructing and rehabilitating structures such as bridges and tunnels to enable wildlife to avoid vehicle traffic, increasing safety to both humans and wildlife.

Pew believes the transportation reauthorization legislation should, among other things, provide competitive matching grants for states, municipalities, and tribes to undertake projects and strategies to reduce wildlife-vehicle collisions. Because new technology reliably shows hot spots where many animals cross highways and roads, these infrastructure investments could be very successful in reducing collisions, improving motorists’ safety, and enhancing habitat connectivity.

The bill also should provide streamlined guidance and best-practice solutions to states, tribes, and federal agencies so they can better plan, design, construct, monitor, and develop preventive maintenance for transportation-related structures. These tools will help to ensure coordinated landscape-scale connectivity and cooperative management across jurisdictions.

The Snoqualmie Pass
The Snoqualmie Pass wildlife overpass on Interstate 90 in Washington provides safe passage for thousands of animals annually, including elk and deer.
Washington State Department of Transportation Flickr

Federal research on wildlife-vehicle collisions has been sparse; the Department of Transportation produced the last major report in 2008. The reauthorization must provide resources to federal agencies to undertake more studies and training about the number, causes, and consequences of wildlife-vehicle collisions. Having current, standardized federal data will help experts and lawmakers at all levels implement and promote sustainable solutions and smart investments.

In addition to a new grant program for wildlife crossings, existing transportation programs funded through the FAST Act could assist in the development of wildlife-friendly infrastructure projects. Enterprises such as the Federal Lands Transportation Program, Block Grant Program, Nationally Significant Freight and Highway Projects Program, and Bridge Investment Program should be given clear authority to use their funds to support wildlife-related infrastructure.

By updating the surface transportation legislation to include the recommendations above, Congress can take a major step toward protecting drivers and wildlife and improving habitat connectivity across the country.

Matt Skroch is a project director and Tom St. Hilaire is a senior officer doing wildlife corridor work with The Pew Charitable Trusts’ U.S. public lands and rivers conservation project.

Spotlight on Mental Health

Composite image of modern city network communication concept

Learn the Basics of Broadband from Our Limited Series

Sign up for our four-week email course on Broadband Basics

Quick View

How does broadband internet reach our homes, phones, and tablets? What kind of infrastructure connects us all together? What are the major barriers to broadband access for American communities?

Pills illustration
Pills illustration

What Is Antibiotic Resistance—and How Can We Fight It?

Sign up for our four-week email series The Race Against Resistance.

Quick View

Antibiotic-resistant bacteria, also known as “superbugs,” are a major threat to modern medicine. But how does resistance work, and what can we do to slow the spread? Read personal stories, expert accounts, and more for the answers to those questions in our four-week email series: Slowing Superbugs.

Explore Pew’s new and improved
Fiscal 50 interactive

Your state's stats are more accessible than ever with our new and improved Fiscal 50 interactive:

  • Maps, trends, and customizable charts
  • 50-state rankings
  • Analysis of what it all means
  • Shareable graphics and downloadable data
  • Proven fiscal policy strategies


Welcome to the new Fiscal 50

Key changes include:

  • State pages that help you keep track of trends in your home state and provide national and regional context.
  • Interactive indicator pages with highly customizable and shareable data visualizations.
  • A Budget Threads feature that offers Pew’s read on the latest state fiscal news.

Learn more about the new and improved Fiscal 50.