Cheese Spill Backs Up Interstate 75 in Dayton Dated: 03/13/2006 12:43:01 AM Updated: 03/13/2006 11:51:05 AM Police shut down lanes on Interstate 75 Sunday night, after an accident left the highway covered with cheese. A semi truck lost its load of Velveeta cheese around 5:30 p.m. Sunday. Cheese spilled out onto the southbound lanes of I-75 at the Main Street overpass in Dayton. Traffic was backed up for about two hours before they could clean up the mess.