The ROI is beyond solid. It's actually insane this wasn't done sooner at this location. The normal ROI for a wildlife crossing is 15 years. Here, it's two to three years.
> Cost savings: Each prevented wildlife–vehicle collision can save thousands of dollars—more than $19,000 per deer crash, $73,000 per elk, and $110,000 per moose—in vehicle, injury, and wildlife costs, making well-placed crossings a strong investment [0]
This section of highway had one deer-vehicle collision per day.
365 * $19,000 = $6,935,000 per year.
[0] https://www.pew.org/en/research-and-analysis/fact-sheets/202...
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edit: this post and resulting thread made me realize that "wildlife crossing" sounds far too tree-hugger for our society. They need to rebrand to "obvious money-saving infrastructure," or better.
This section of highway had one deer-vehicle collision per day.
That sounds like an extreme outlier.