Updated July 31 at 10:40 a.m.
The collision scene has been cleared and the highway fully reopened, the MTO reported on Twitter at 8:24 a.m. Wednesday.
A collision in the Worthington area has reduced the westbound lanes of Highway 17 to one lane, according to the MTO Twitter account @511ONNortheast.
Specifically, the crash is between Sleepy Hollow Road and Salo Road/Double S Road.
No further information about the incident is currently available.