An accident involving a semi-truck closed one lane of westbound Interstate-40 near Williams this morning. DPS officials say a truck hauling frozen chicken rolled over at around milepost 170 just east of Williams. The trailer emptied its contents along the highway. The right lane is open, but it will be slow going through the area this morning. It may take a while to clean up the accident scene. There’s no word on what caused the accident or if there are any injuries.