The I-90 Snoqualmie Pass East Project is setting a new standard for creating safe passage for people and wildlife in Washington’s Cascades with dozens of wildlife underpasses and two wildlife overpasses planned over a 15-mile stretch from Hyak to Easton. Collaboration and science have informed this project every step of the way, from design through construction. With several crossing structures complete and the full project funded, monitoring to ensure these measures are working is important. Additionally, wildlife monitoring on the habitat adjacent to the highway helps to inform natural resource management and conservation efforts while providing insight into what species may utilize the crossing structures in the future.  Links below offer greater information on the project and suite of wildlife monitoring completed or underway.

Quick links to I-90 corridor information

Fish and Wildlife Monitoring Reports and Information Relevant to I-90 corridor

Central Washington University:

Conservation Northwest:

Other resources

Fish and Wildlife Monitoring of Crossing Structures Elsewhere