Sarnia police are investigating a collision on London Line between Telfer Road and Brigden Road.
The incident was reported late Monday night.
"As a result, both eastbound and westbound lanes of London Line will be closed in that area and traffic will be diverted until the investigation is completed," read a media release, issued at 10:41 p.m.
The intersection of London Line and Telfer Road reopened to traffic at around 1 p.m.
Police said the investigation is continuing, and further information will be provided in the coming days.