A woman is in critical condition due to an early-morning crash on Highway 401 east of Dufferin Street.

It happened around 7:30 a.m. on Tuesday.

The vehicle drove into a construction area and crashed into the back of a parked excavator.

“This is a very critical situation here,” OPP Sgt. Kerry Schmidt explained.

“The vehicle somehow entered a construction area and went … at pretty high speed, right into the back of parked construction equipment.”

All eastbound collector lanes of the 401 have been closed east of Dufferin Street to Avenue Road.

TRAFFIC ALERT: EB 401 collector lanes are CLOSED from east of Dufferin to Avenue – vehicle crashed into construction equipment, emergency crews on scene. — Kerry Prunskus (@KerryPrunskus) June 19, 2018