Part of a busy highway interchange is expected to remain closed until this evening after a truck carrying a mixture of mayonnaise and salad dressing rolled over, spilling its cargo on the road.

The transport truck somehow ended up on its side on the ramp from the northbound Don Valley Expressway to the westbound lanes of Highway 401 shortly before 11 a.m.

The driver of the vehicle was taken to hospital with cuts and scrapes. He has since been charged with careless driving.

In a video posted to Twitter, Ontario Provincial Police Sgt. Kerry Schmidt said the cargo is some sort of food sauce that appears to be salad dressing. Police later tweeted a photo saying mayonnaise was also in the mix.

In the video, the greenish-yellow sauce is seen oozing out of the containers and spilling out over the roadway.

Police said it would likely take hours to get the truck upright and to clean up the road and that the ramp would not reopen until 8 p.m.

In the meantime, traffic is being diverted to Highway 401 eastbound or to Highway 404.

Drivers are being advised to exit the northbound DVP earlier at York Mills Road to avoid the congestion or to proceed to Highway 404 and then exit at Finch Avenue.