One person is dead after a head-on crash on a ramp from the Highway 401 to Highway 416 south of Ottawa.

The crash happened around 4:45 a.m. Friday. Police say a vehicle was heading southbound on the northbound ramp 721A, which goes from the eastbound Highway 401 to Highway 416 heading to Ottawa.

The vehicle crashed head-on into a tractor-trailer. The driver of the vehicle was pronounced dead.

The ramp was closed for more than 10 hours while police investigated, but reopened at approximately 3:30 p.m.