They also said debris from the phenomenon ended up in Ten Mile Creek, adding that these type of avalanches with large powder clouds can occur during heavy snowfall events.
CBS Denver reports several avalanches sent snow crashing out onto the highway in Summit County near Copper Mountain.
The two avalanches did close part of I-70, but officials say the highway did not suffer significant damage. He says it was "exciting, but pretty nerve wracking".
No avalanche-related injuries were reported.
Another driver filmed the avalanche from his rear window as he narrowly missed being swamped by the snow.
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Their windshield was covered with snow, but their vehicle was not trapped.
The accompanying footage, captured by Shaune Golemon and shared with Denver 7 News, shows the snow slide seemingly burying a white truck with a family inside.
Jacob Easton was traveling through Ten Mile Canyon on Interstate 70 near Breckenridge when he captured the avalanche roaring down the mountain.
Colorado's Avalanche Information Center recorded 807 avalanches in February, 444 of which were triggered naturally.