US-12 between Junction Interstate 90 at Garrison and Helena including MacDonald Pass

Road Conditions:

Road conditions as of 3:00 PM MDT on Tuesday, May 21 are as follows: dry between Junction Interstate 90 East and Montana 88-Garrison and 1 mile west of Junction Montana 141-Avon, wet between Junction Montana 141-Avon and 6.25 miles west of Junction Interstate 15 and US 287 South-Helena, and dry between 6 miles west of Junction Interstate 15 and US 287 South-Helena and Junction Interstate 15 and US 287 South-Helena. Actual road conditions may vary from this report. Motorists are cautioned to be alert to changing conditions.


The following construction project is in effect: miscellaneous maintenance between 6 miles east and 8 miles east of MacDonald Pass including delays up to 30 minutes, reduced speed, and a road closure.


The forecast until 9:00 PM MDT on Tuesday, May 21: Skies will be overcast. Visibility will be ten miles changing to five miles. There will be frequent light rain changing to continuous light rain. Winds will be 10 mph gusting to 20 mph from the northeast changing to 9 mph gusting to 16 mph from the east-northeast. Temperatures will range from 36 to 52 F changing to 32 to 46 F.