Chatham-Kent OPP say a 63-year-old Windsor man is still in critical condition after the transport truck he was driving rolled onto its side on Highway 401 near Chatham.

The driver of the tractor trailer has been identified as Dwain Milks.

Police and paramedics were called to a collision involving a tractor trailer on Highway 401 westbound near Communication Road just after 2:30 p.m. Tuesday.

The transport left the roadway and came to rest on its side at the bottom of the CSX overpass.