SR 410 Chinook Pass and SR 123 Cayuse Pass are OPEN! Live on the scene to be one of the first to drive through it are…. my parents?! Mom and Dad, thanks for sharing pass conditions with everyone else who plans to make the trek this holiday weekend. And for being generally awesome. Keep in mind that Mount Rainier National Park has a project in progress to repair sections of SR 123, which adds about 30 minutes of travel time, seven days a week, through October. And, most importantly, a massive tha