Snoqualmie Pass is the pass through the mountains. It's not the name of the animal crossings.

For a better write-up on these crossings a few miles east of the pass, you can go to the source at the Washington Department of Transportation: https://wsdot.wa.gov/about/data/gray-notebook/gnbhome/environment/wildlifehabitatconnectivity/snoqualmiepasseastproject.htm