US-20 between Idaho State Line at Targhee Pass and West Yellowstone Park

Road Conditions:

Road conditions as of 9:30 AM MDT on Wednesday, June 28 are as follows: dry. Actual road conditions may vary from this report. Motorists are cautioned to be alert to changing conditions.


The following construction project is in effect: rumble strip maintenance including delays up to 15 minutes, flaggers present, and reduced speed (travelers can expect loose gravel, traffic controlled by signal lights, and a pilot car in use).


The forecast until 3:00 PM MDT on Wednesday, June 28: Skies will be partly clear becoming mostly cloudy. Visibility will be ten miles. There will be frequent thunderstorms changing to continuous thunderstorms. Winds will be 4 mph from the west-southwest changing to 12 mph gusting to 18 mph from the southwest. Temperatures will range from 44 to 50 F changing to 53 to 59 F.