The Ministry of Environment has been called following a transport crash on the 402 near Strathroy.
The vehicles was heading eastbound early this morning when the driver lost control and the truck rolled into the median.
As much as 6000 pounds of paint was spilled as a result, prompting the MOE call.
The truck driver was taken to hospital with non-life threatening injuries.
Middlesex OPP say drivers should expect delays near Centre Road as the cleanup could take some time.