This from Niko Stefani:
The Lake Forest Fire Department was called to southbound Rt 41 just north of Deerpath Road near the hospital entrance for a semi that was on fire. The driver was able to detach his trailer that was loaded with cheese. Dispatchers advised the en route companies that the rear breaks were on fire. Battalion 42 arrived with a fully involved trailer. Rt. 41 was shut down and traffic was being redirected down Gage Ln. There were issues establishing a water supply, Engine 422 laid a supply from the hospital out to the scene. Ernie’s Wrecker Service responded to retrieve the trailer. IDOT was requested to make a few passes with salt due to the frigid temperatures. Companies on the scene from Lake Forest: Squad Co. 421, Engine Co. 422, Ambulance 421, Utility 421, and Battalion 42. Lake Bluff Engine Co. 4519 and Knollwood Engine Co. 44. Thanks.