Verkkosubscribe to customized email alerts to help you know before you go. Receive current traffic conditions, mountain pass reports, construction updates. Verkkosubscribe to customized email alerts to help you know before you go. Receive current traffic conditions, mountain pass reports, construction updates and more. Verkkomountain passes & winter travel. Map of all the mountain passes in washington state. Click on the green and white mountain pass icon for the specific pass’s. Verkkomountain pass closure and opening dates. Historic opening and closing dates for chinook, cayuse and north cascades passes. Chinook pass sr 410. Blewett pass us 97. 4102 ft / 1250 m.
