A truck has rolled onto its side and dumped a load of old asphalt onto southbound Highway 410 south of Courtney Park Drive this afternoon, causing major traffic delays.

The dump truck and two other vehicles were involved in a crash just before 4 p.m.

The truck driver and one other motorist involved were taken to hospital with moderate injuries, according to Peel Region Paramedics.

Emergency crews are advising motorists to avoid the area. Both directions of the highway are moving slowly, according to police who said there is "obviously significant cleanup" needed.