DENVER -- Government offices and some businesses closed Friday after a second storm in a week socked the Front Range, with no end in sight

The Colorado National Guard was working Friday afternoon to rescue an unknown number of motorists stranded in wintry conditions in southeast Colorado.

Office of Emergency Management spokeswoman Polly White said a tour bus was among the stranded vehicles in Baca County.

The Colorado State Patrol reported one storm-related traffic fatality and the snow was blamed for the collapse of a section of dairy barn in Weld County. It happened about mid-morning Friday at the Shelton Dairy in Weld County. No one was injured but one cow was killed when the roof caved in.

The large barn is located near Weld County Road 42 and Weld County Road 47, near Gilcrest. Click to see video of the collapsed roof.

Snow falling at up to 4 inches an hour blanketed Evergreen in the foothills west of Denver on Thursday, with 36 inches of snow measured in the nearby Conifer area and 28 inches of snow in Evergreen by Friday.

Stacey Stegman, spokeswoman for the Colorado Dept. of Transportation, said 75 plows were out Friday morning, working highways in the Denver metro area. She also said Interstate 70 was closed from Airpark Rd., just east of Denver, all the way to the Kansas border. Click here to check the latest highway closure list.

Crews were scraping sidewalks early Friday and private contractors were plowing parking lots after 10 inches of snow fell in the Denver metro area by Thursday night.

Gov. Bill Owens again declared a statewide disaster emergency and state officials urged residents to remain home. With some 2 feet of snow possible in the Denver metro area through Saturday, some agencies expected to avoid the problems that came with last week's blizzard that dumped nearly 2 feet of snow in about a day that virtually paralyzed the region and shut down Denver's airport for 45 hours.

Some people, stuck on Interstate 70 near Idaho Springs, were still stranded early Friday morning, 7News reported. The major highway was at a standstill for at least three hours Thursday night as a result of heavy traffic, spun out vehicles and a jackknifed truck.

The Greyhound terminal in downtown Denver had about 200 people waiting after the bus line canceled all trips out of Denver.

"It's falling at a much slower rate and it seems that the crews are better able to keep up with it," said Scott Reed, a spokesman for the Regional Transportation District that operates public transit for the six-county Denver metro area.

Buses and light rail trains were on a regular schedule Friday, Reed said, but: "We're hoping commuters heed the state of emergency and the advisory to limit travel to only essential trips."

Reed suggested that riders check the latest updates on the RTD Web site.

Most flights at Denver International Airport were showing an "on time" status early Friday morning, though 15 to 20 percent of United and Frontier Airlines flights were canceled through Friday.

About 38,000 customers of Xcel Energy lost power at some point since the storm began Thursday, the utility said. Power had been restored to most customers by early Friday, and extra crews were working to restore power, spokesman Mark Stutz said.

Some 8,000 Xcel customers in Lafayette, Louisville and Erie were still without power Friday morning. Xcel had restored power to about 10,000 customers in the same area Thursday night.

On Thursday, Denver plow drivers started spraying deicer on streets before dawn. Longmont residents lined up to buy snow shovels, and many stores along the Front Range reported running out of shovels. Frontier and United airlines canceled more than 180 flights in Denver.

"We're getting films, getting groceries, going home and staying in," said Patricia Switzer of Denver, who was picking out DVDs after stocking up on staples and ingredients for chili.

Cars lined up to get into a Denver King Soopers grocery store parking lot. Inside, Oliver Hogue filled a cart with milk, dishwashing detergent and other necessities.

"It's fun. It's not like you get snow every day. If you live here, you have to be prepared for four seasons," he said.

King Soopers brought in extra trucks to stock its stores, some of which were still feeling the effects of the last storm, company spokesman Trail Daugherty said.

Eggs were in short supply, and the variety of products was limited in some locations, but the situation was improving, he said.

"This new storm, though, has created a lot of anxiety with consumers, and so today we are just absolutely inundated with customers."

The Apple Jack Wine & Spirits in Wheat Ridge was busy Thursday with New Year's Eve around the corner. State law bars it from doing business Sunday. Store President Jim Shpall said his goal was to stay open during the storm.

"A storm like this during a holiday means that you lose business. There's no doubt about it, and its business that you don't necessarily recover," Shpall said.

Federal courts were to remain closed Friday, as well as many government offices and businesses in Denver and other cities in the state's main population corridor along the Rocky Mountain Front Range, including the National Oceanic & Atmospheric Administration offices in Boulder. Greyhound also canceled all trips out of Denver on Friday and more cancellations could follow this weekend depending on the weather.

Denver Mayor John Hickenlooper said for the first time since 1983, the city will enforce snow-route restrictions, towing cars parked overnight along roads marked as reserved for snow removal. He also urged residents to avoid driving as much as possible and to help each other with snow shoveling and freeing stuck cars.

"We felt we had to do anything we could to get the city open again," he said.

That included hiring private contractors and working with Denver Public Schools and all city agencies to get as many snowplows working as possible. At the height of the work during this storm, up to 180 vehicles will be working to clear snow from the city's streets -- from major arterials to neighborhood roads -- more vehicles than have ever been used for snow removal in Denver, Hickenlooper said.