Male, 39, Normal was traveling east on 1-74 approaching milepost 211. A deer entered the roadway in front of him, he braked abruptly to avoid the deer and that forced the semi and trailer it was hauling off the roadway to the left. It continued to slide off to the left striking the median wire and wire posts. The trailer then continued to spin clockwise as it traveled through the median striking crash barrels and eventually the bridge support. The impact split the trailer in two spilling the empty bin containers into the roadway. The tractor sustained only minor damage.