Snoqualmie Pass

Snoqualmie Pass
I-90 through Snoqualmie Pass
Elevation3,015 ft (919 m)[1]
Traversed by I-90[2]
LocationKing / Kittitas counties, Washington, U.S.[1]
RangeCascade Range
Coordinates47°25′23″N 121°24′40″W / 47.423°N 121.411°W / 47.423; -121.411[1]
Snoqualmie Pass is located in Washington (state)
Snoqualmie Pass
Snoqualmie Pass
Snoqualmie Pass is located in the United States
Snoqualmie Pass
Snoqualmie Pass

Snoqualmie Pass is a mountain pass that carries Interstate 90 (I-90) through the Cascade Range in the U.S. state of Washington. The pass summit is at an elevation of 3,015 feet (919 m), on the county line between Kittitas County and King County.[1]

Snoqualmie Pass has the lowest elevation of the three east–west mountain routes across Washington State that are kept open year-round, along with Stevens Pass (US 2) to the north, and White Pass (US 12) to the south. I-90 is the primary commercial artery between Seattle and points east, carrying an average of 29,000 vehicles through the pass per day.[3] I-90 is the only divided highway crossing east–west through the state.[a]

The pass lends its name to a census-designated place (CDP) located at the summit (Snoqualmie Pass, Washington). Both the CDP and Snoqualmie Pass are named after the Snoqualmie people of the valley to the west.

  1. ^ a b c d "Snoqualmie Pass". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved August 31, 2015.
  2. ^ Google (August 31, 2015). "Snoqualmie Pass" (Map). Google Maps. Google. Retrieved August 31, 2015.
  3. ^ "Annual Traffic Report". Washington State Department of Transportation. Retrieved August 31, 2015.
  4. ^ Eustice, J. Bradley; Sage, Jeremy (May 2, 2016). Reroute or Wait It Out: Estimating Optimal Route Decisions in the Presence of Unexpected Delays. Freight Policy Transportation Institute, Washington State University.


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