PORTLAND, Ore. — Science enthusiasts, conservation advocates, and curious community members are invited to learn how an innovative wildlife crossing beneath U.S. Route 30 is helping protect one of the region’s most recognizable amphibians during an upcoming Science on Tap presentation on Wednesday, July 22, at the Alberta Rose Theatre.
The event, which begins at 7 p.m., will explore the remarkable conservation story of Portland’s northern red-legged frogs and the early success of a wildlife tunnel designed to help them safely migrate beneath one of the city’s busiest roadways. Tickets range from $15 to $45.
Each winter, northern red-legged frogs embark on a dangerous journey across U.S. Route 30 as they travel to breeding ponds during rainy nights. The seasonal migration often places the amphibians directly in the path of traffic, creating a significant obstacle to their survival.
To address the problem, biologists, volunteers, and conservation partners have spent more than a decade developing solutions to reduce amphibian deaths. Early efforts included manually assisting frogs across the highway using buckets, while long-term planning ultimately led to construction of a dedicated wildlife tunnel beneath Route 30.
Construction on the crossing began in the summer of 2024. Less than two years later, researchers report that the project is already showing encouraging results, providing frogs and other small wildlife with a safer route beneath the roadway while reducing the need for risky surface crossings.
Scientists are also using specialized monitoring technology to better understand northern red-legged frog behavior and develop additional conservation strategies for the common but often overlooked species.
The featured speaker, Alyson Yates, is a graduate student in Portland State University’s School of Earth, Environment and Society and a freelance photojournalist. Her work has appeared in National Wildlife Magazine, Bats Magazine, Merlin Tuttle’s Bat Conservation publications, Oregon State University media, and other outlets.
Attendees will gain insight into the ecological challenges facing amphibians in the Portland area, learn how infrastructure projects like the Route 30 frog tunnel can improve wildlife conservation, and discover ways community members can help protect local species.
Science on Tap is a popular lecture series that brings scientists and the public together in an informal setting, combining engaging presentations with opportunities to enjoy food and drinks while learning about science topics ranging from local ecosystems to global discoveries.
The event will be held at the Alberta Rose Theatre, with doors opening before the 7 p.m. presentation. Additional information and tickets are available through the Science on Tap OR WA event website.
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