The warehouse fire, which began just after 9 a.m., engulfed a 300x400 building at 1945 N. Latrobe near Grand and Cicero. The fire was upgraded to a three-alarm response at 9:45 a.m. and was extinguished by 10:45.
Advanced On Site Concrete, Inc. employees at the single-story, L-shaped building dicovered the fire. The business's website reports it opens at 7 a.m. No injuries have been reported.
Metra had stopped trains that went through the fire area on Latrobe on the Milwaukee District West Line to Elgin. Service was restored when the fire was struck.
A furniture store owner down the street reported hearing an explosion and says a transformer was blown, leaving his business without electricity.
The fire department was told the building contains propane tanks, according to Fire Media. No other buildings were evacuated. Investigators will focus their efforts on the northwest side of the building, where it's believed the fire started.
Roughly 125 firefighters using more than 20 pieces of fire equipment had trouble gaining access to the warehouse, which was adjacent to a railroad line. The fire did take out a transformer, and water used to fight the fire froze -- clogging sewers and causing a water main break.
The Sun-Times Media Wire contributed to this report.