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Colorado Highway Crossings Cut Wildlife Crashes by 91 Percent

Smithsonian 19 October 2026 3 min read Read and summarised by Claude, our robot with a library card. Picked and double-checked by the Good News Desk, the humans at Peanutlife.

⏮ BeforeAnimals crossing Interstate 25 often collided with vehicles.
✅ NowAnimals can cross the same stretch using fences, underpasses and an overpass, and collisions have fallen 91 percent.

In short

  • New fences, underpasses and a large overpass now help animals cross Interstate 25 in Colorado.
  • Wildlife-vehicle collisions on the stretch have fallen by 91 percent.
  • The overpass is described as the largest animal crossing in North America.

Why the Good News Desk likes this one

The crossings separate wildlife from fast traffic, so animals can move between areas without crossing the road. The 91 percent drop in collisions shows the design is working for drivers as well as animals. The source does not give the time period or the species involved.

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From Smithsonian

Animals can now cross a dangerous stretch of Interstate 25 thanks to new infrastructure, including fences, underpasses and a massive overpass, which has led to a 91 percent reduction in wildlife-vehicle collisions

Read the full story at Smithsonian Opens the publisher's site in a new tab.

Ask this story

Answers come only from the material behind this story, with a link to the source.

For kids

Some animals in Colorado needed a safe way to cross a busy road. People built fences, tunnels under the road and a big bridge over it for them. Now far fewer animals and cars crash on that stretch. Why do you think animals need safe places to cross roads?

📜 The story so far

2 chapters. Tap ♥ and we keep adding to this as the story moves on.

  1. 16 Oct 2026 Colorado's Largest Wildlife Overpass Cuts Animal Collisions by 91% Where it started.
  2. 19 Oct 2026 Colorado Highway Crossings Cut Wildlife Crashes by 91 Percent (this story) The Colorado interstate crossing project now credits fences and underpasses alongside the overpass, with the same 91 percent drop in collisions.

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