UPDATE -- The Wausau Fire Department cleared the scene of Central Storage in Wausau around 12:30 p.m. Wednesday.
First responders were called to the scene before 6 a.m. Tuesday.
Crews had to demolish most of the building. The part remaining suffered serious smoke and water damage, but the property owner is working to repair the damage.
The cause of the fire is still under investigation.
Crews are working to fight a fire that broke out at a cold storage facility on Wausau’s west side early Tuesday, according the Wausau Fire Department.
A call came in just after 6 a.m. for a fire at Central Storage at 1212 West St. and fire officials called for mutual aid from area departments, according to the Wausau Fire Department.
Hot spots remained well into the afternoon. The structure of the building made them difficult to knock down.
"It's a rather old building, different add-ons to it," said Deputy Chief Josh Klug. "Different roof structures making it difficult along with the weather to get at the remaining fire."
There was also initial concern about a building to the east because the facility stores hay.
"We have units going to cover that hay with tarps right now because if we get embers in there, we'll have another giant building on fire," Battalion Chief Paul Czarapata said.
As of 3 p.m. Tuesday, crews were able to keep the fire contained to the storage facility.
The cold temperatures are making it harder, since the water will freeze and add slippery spots, officials said. At the time of the fire, wind chills were reported around 7 degrees.
"The cold for us makes everything more difficult because we're using water and it makes everything slippery and everything is cold," Czarapata told Newsline 9. "It just makes it more difficult to operate. Your body is asking more, trying to generate heat."
Officials said a bus will be used on site to rotate crews into a warm space as they continue to fight the blaze.
The Salvation Army was also on scene to provide resources for firefighters.
"We have water, soda, coffee, hand warmers," said Bob Pound, who was stationed at the Salvation Army truck all day. "We've got replacement gloves and socks."
No one was inside when the fire happened and no one on scene was hurt.
Multiple departments are at the scene, including SAFER, Kronenwetter, Maine and Wausau.
West Street is closed between 17th Ave. and 10th Ave.