Amphibian Road Mortality Drops by over 80% with Wildlife Underpasses, Study Shows

The World's Largest Wildlife Crossing Is Almost Ready To Help Animals Cross Ten Lanes Of The 101 Freeway

The wildlife crossing will allow animals to cross over one of the busiest roadways in the world that sees around 300,000 travelers daily.

Helping Wildlife Access The Resources - Rogue River Press

Roads fragment and reduce the quality of habitat, and cause collisions with wildlife. According to Oregon Department of Transportation (ODOT) carcass collection data, approximately 5,000 large-bodied animals, including elk, deer, bear, and antelope, are killed annually in wildlife-vehicle collisions (WVCs). The actual number of wildlife killed by roads in Oregon is likely much higher, as, according to researchers, an equal or higher number of an…

Wildlife underpass reduces squished amphibians by 80%

Vulnerable amphibians are getting some help from an effective and pretty simple intervention–wildlife underpass tunnels. Long-term research in Vermont spanning more than 10 years found that these tunnels can reduce amphibian deaths by 80.2 percent and help preserve ecosystems. The findings are detailed in a study published online this week in the August 2025 issue of the Journal for Nature Conservation.  “It was surprising. I knew that underpass…

Study: Wildlife underpasses save amphibians

New UVM research highlights cost-effective solution for protecting salamanders, frogs, and other vulnerable species by restoring habitat connections across roadsA new UVM-led study shows that wildlife underpass tunnels dramatically reduce deaths of frog, salamanders and other amphibians migrating across roads.Frogs, salamanders, and other amphibians around the world face mounting threats from a devastating fungus, climate change, habitat loss—an…

Amphibian road mortality drops by over 80% with wildlife underpasses, study shows

Frogs, salamanders, and other amphibians around the world face mounting threats from a devastating fungus, climate change, habitat loss—and road mortality. Among these, roads pose a uniquely immediate danger by cutting through critical migration corridors, allowing vehicles to crush millions of animals each year.