http://www.stgeorgeutah.com/news/archive/2015/08/10/ccj-closure-89a
QuoteArizona Department of Transportation crews from Fredonia, Page and Gray Mountain, Arizona, are working to reopen Highway 89-A Monday. A 34-mile stretch of road was shut down Sunday afternoon after flooding from a massive storm washed mud and boulders across the highway between Marble Canyon, Arizona, and Jacob Lake, Arizona.
"There are boulders the size of houses on the road," a desk clerk at Cliff Dwellers Lodge, near the slide area, said.
... As of 2 p.m. MDT Monday, ADOT did not yet have an estimate for when the road will be reopened.
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That's insane!
I've been on that stretch of road several times. Its hard to imagine this happening.
I'm surprised that there was enough force to push those boulders up onto the road, yet it looks like the road itself is still intact; it didn't just get washed away.