Crews are working to remove a substantial rock slide that blocked both lanes of the Craig Frontage Road.
Recent weather caused a cliff along the road to give way, resulting in the rock slide that was reported Thursday morning.
"We are hoping to have it open and safer for travelers by Memorial Day weekend," said John Sharkey, with the Montana Department of Transportation.
Rock slides in the canyon between Sieben and Hardy Creek are common, but this one was unusually large, according to Sharkey.
"The most important takeaway from this event is no one got hurt," Sharkey said.
Late Thursday morning, crews on the scene were still evaluating the slope for potential further erosion and working to reduce the size of the boulders for safe removal.
MDT recently finished a $15.8 million rockfall mitigation project along the interstate in the canyon, but the Craig Frontage Road was not a part of that project.
Thom Bridge can be reached at Thom.email@example.com
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