A mudslide closed I-70 Saturday afternoon, after a flash flood warning was issued for the Grizzly Creek fire burn scar near Glenwood Canyon.

At around 3:10 p.m., officials tweeted that eastbound lanes on I-70 had been closed east of Glenwood Springs. Four minutes later, they tweeted that westbound travel had also been closed off.

By 6:30 p.m., eastbound I-70 had been reopened, but westbound lanes of travel were still closed in Glenwood Canyon, the Garfield County Sheriff’s Office said.

The mudslide, the Colorado Department of Transportation said, was about 70 feet wide and five to seven feet deep.

Colorado Department of Transportation communications manager Elise Thatcher said that crews would be working to clear the debris through the night, and that as of 8 p.m. westbound lanes of travel were still closed.

“With this overnight work, we’ll know more in the morning,” Thatcher said.

No one was injured in the mudslide, and no vehicles were trapped under the debris, officials said.

The department said people traveling in that area should stick to a detour that would take them from I-70 at Silverthorne through Kremmling, Steamboat Springs, and Craig before turning south toward Rifle. The detour, officials said, would take around two-and-a-half hours.

Garfield County is also facing Stage 2 fire restrictions, which began Friday, as “current active wildfires in Garfield county have already stretched our available resources,” the Garfield County Sheriff’s Office said in a Thursday press release.

National Weather Service meteorologist Mark Wankowski said that because the Grizzly Creek fire burn scar is relatively new, there was a higher chance for residual ash and rocks to create mudslides when paired with heavy rains.

“With extremely new burn scars, you’ll see more flash flooding, rock slides,  and mud slides,” he said. “They will be extremely sensitive to flash floods.”

Flash flood watches were also issued for several areas along the Front Range through 9 p.m. on Saturday, as part of the heavy rains expected in southern Colorado this weekend.

The National Weather Service in Pueblo said the areas likely to see flash flooding are in areas that have been hit by wildfires, including the Junkins, Decker, Hayden Pass, and Spring burn scars along the Front Range.

The agency also issued flash flood watches for Cottonwood Creek and Chalk Creek, which are west of Buena Vista.

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