Spring:
The North Entrance to Northeast Entrance at Silver Gate and Cooke City, Montana is open all year. Please note that this road is closed to east/west travel just east of Cooke City from late fall to early spring.
Once an Entrance/Road opens, it is open 24 hours a day. The only exceptions are caused by road construction and weather-related restrictions.
Roads will open to motorized, wheeled vehicles as follows:
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April 17, 2009–West side roads open to motor vehicles. Mammoth to Norris Junction to Madison Junction to Old Faithful; Madison Junction to West Entrance; Norris Junction to Canyon
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May 1, 2009–Canyon to Lake; Lake to East Entrance
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May 8, 2009–Tower Junction to Tower Fall; Lake to West Thumb; West Thumb to Old Faithful; Old Faithful to South Entrance. Cooke City via Colter Pass to the Chief Joseph Scenic Highway intersection to the Long Lake gate shall be open as soon thereafter as possible.
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May 22 (if snow and plow conditions allow): Tower Falls to Canyon via Dunraven Pass; Long Lake Gate to Red Lodge via Beartooth Pass.
In the spring, before park roads open to motorized vehicles, some roads are open to non-motorized recreational vehicles such as bicycles, roller skis, and roller blades. There will be some administrative vehicles traveling the roads at this time so be careful. See the Spring Biking Page for a map and more information.