Westbound Interstate 70 reopened early Saturday after a "major closure" on Friday backed up traffic for miles.

Up to four inches of hail blanketed parts of I-70 on Friday afternoon as a fast-moving storm headed from the mountains to the Denver metro area. 

In a tweet, Colorado State Patrol said there was a mudslide at the top of Clear Creek Canyon.

The storm caused debris to fall on I-70. The westbound lanes were closed as crews assessed damage in the area, according to a tweet from the Colorado Department of Transportation.

Westbound I-70 remained closed overnight. CDOT crews inspected the rock face beside the interstate at sunrise Saturday before reopening all lanes.

RELATED: Weather blog: Westbound I-70 will remain closed overnight

RELATED: Severe thunderstorms moving into the metro area

RELATED: Is this the biggest hail ever in Colorado? State record possible

Much of the hail was seen in the area of Floyd Hill.  

Here are some images of the busy highway in wake of this rare storm. Notice the waterfalls coming down the rock walls in the video above. 

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