A single-vehicle crash on Highway 10 near Caledon Village led to a lengthy closure Saturday morning.
The collision occurred shortly before 6:30 a.m., prompting authorities to shut the highway in both directions between The Grange Side Road and Olde Base Line Road.
One person sustained serious injuries and was airlifted to a trauma centre to be further assessed. The highway reopened to traffic just before 12:30 p.m.