Chatham-Kent OPP are investigating a crash that sent one person to the hospital with life-threatening injuries.
According to the OPP, the crash happened in the eastbound lanes near Tilbury forcing the closure of the highway between Mill Street and Queens Line around 7am Friday.
Police say a vehicle left the roadway and rolled over into the highway median.
A 23-year-old man suffered critical injuries
The highway reopened around noon.