See the summit before you drive it. Live WSDOT cameras and real-time conditions on I-90 over Snoqualmie Pass — snow, chains, and closures as they happen. It's the busiest mountain pass in Washington and the main link between Seattle and Eastern Washington.
Snoqualmie Pass carries I-90 over the Cascade Range at 3,015 ft. Here's what to watch, and when it bites.
The pass stays open most of the year, but heavy Cascade snow and scheduled avalanche control work close I-90 over the summit several times each winter — sometimes for a couple of hours, occasionally longer. Closures can happen with little notice, which is exactly why the live cameras above are worth a look before you leave.
At 3,015 feet, Snoqualmie is the lowest of Washington's major passes, which is part of why it carries the most traffic — it's the everyday route between the Seattle metro and Eastern Washington. Lower doesn't mean easy, though: it still catches heavy, wet Cascade snow.
The cameras and alerts above are the stationary view — the WSDOT feeds you'd check before you leave. In the MileCheck app, the nearest camera and your exact mile marker follow you up the grade automatically, hands-free on CarPlay and Android Auto, so you're never guessing which stretch you're on.
The live map above shows active closures and incidents on I-90 over the pass as red and orange markers, straight from WSDOT. For closures across the whole US, see the road closures map. The pass shuts for avalanche control and heavy snow several times each winter.
Requirements change with conditions and are set by WSDOT — watch the live cameras above for snow and ice on the roadway, and always follow posted signs. They can jump from none to chains-required within an hour during a storm.
The summit is 3,015 feet — the lowest of Washington's major Cascade passes, which is why it's the busiest. See every camera in Washington and 24 other states for the rest of your route.
About 52 miles east on I-90, roughly an hour in good conditions. Track your exact mile marker over the pass hands-free with the MileCheck app on CarPlay or Android Auto.
MileCheck shows your exact mile marker in real time as you drive I-90 over Snoqualmie Pass, plus the nearest camera and any alert on your route. Free to start, works offline, and runs on CarPlay and Android Auto.
MileCheck