Wildlife crossings can save money by preventing car crashes, study finds

• As a result, each crossing structure ends up saving an estimated $235,000 to $443,000 annually, the study found.

Context: Washington state has 22 wildlife crossings, some of which go under highways and others that go over them.

• Animals such as deer and bears use the crossings to safely reach food, habitat and mating opportunities.

What they found: The WSU analysis looked at crashes within 10 miles of 13 wildlife crossings, discovering that after the structures were built, there were one to three fewer traffic collisions involving wildlife per mile each year.

What they're saying: "This shows there’s something we can do about these collisions," the study’s author, WSU doctoral student Wisnu Sugiarto, said in a news release.

The bottom line: The research suggests that the cost of building a wildlife crossing — between $500,000 and $6 million — is outweighed by the structure’s benefits over time.