I-90 Wildlife Bridges Coalition
The I-90 Wildlife Bridges Coalition formed in 2004 to ensure high-quality safe passage for wildlife north to south across Interstate 90 in Washington's Cascades.
Building connectivity for wildlife in the Cascades
Connecting habitat in the Cascades helps large mammals roam more freely north to south within Washington. The I-90 Project is fixing a critical 15-mile stretch of interstate along a busy passage near Snoqualmie Pass in the Cascades making it safer for people and wildlife.
The I-90 Wildlife Bridges Coalition, administered by Conservation Northwest, was formed to make sure the I-90 Project interstate upgrade incorporates over- and underpasses for terrestrial and aquatic wildlife to safely travel across the interstate. This plan to improve connectivity around Snoqualmie Pass is the natural outcome of The Cascades Conservation Partnership in this important Cascades wildlife travel corridor.
The I-90 Snoqualmie Pass East Project will improve 14 key animal-travel areas between Hyak and Easton, an area busy with traffic and much frequented by wildlife.
Improvements to the freeway include crossing structures to divert wildlife over and under the freeway through carefully designed passages. Passages beneath the freeway include creek crossings and wildlife-size culverts, one of the underpasses, at Gold Creek, is now complete.
Also includes are two overpasses, one at Easton Hill and the other at the rock knob by the Keechelus Dam. These 150-foot-wide wildlife bridges will span the width of the interstate. The bridges will be fully vegetated so the animals feel protected by forest cover as they cross.
Learn more at the Department of Transportation site.
I-90 Wildlife Bridges Coalition steering committee
- Alpine Lakes Protection Society
- Biodiversity Northwest
- Conservation Northwest
- Kittitas Audubon Society
- Seattle Audubon Society
- Sierra Club
- The Cascades Conservation Partnership