The eastbound off-ramp of the Highway 401 onto the northbound Veterans Memorial Parkway was closed for much of the day due to a tractor trailer rollover.
Middlesex OPP and London emergency crews responded to the rollover at 10:45 a.m. on Wednesday.
Police say a tractor trailer rolled onto its side and lost part of the product being transported.
The off-ramp was expected to remain closed until around 8 p.m. while emergency crews conducted their investigation and the vehicle and its contents were removed.
Charges are pending but there were no major injuries and no public safety concerns.
Officers are asking the public to use caution when travelling through the area as delays were expected.