An oil spill on Highway 7 in Guelph on Thursday evening due to a collision has now been cleared. In a social media post at 6:22 p.m., the Ontario Provincial Police (OPP) announced the closure at Wellington Road 32 in Guelph. They said a collision in the area had caused the spill. Drivers were urged to avoid the area. OPP announced the road had reopened Friday at 4:15 a.m.