Provincial police in Ottawa closed off the eastbound lanes of Highway 417 on Tuesday afternoon after a fatal single-vehicle crash near Carp Road.
Ottawa OPP officers responded to the collision at 12:49 p.m.
Police said a pickup truck appears to have left the roadway, struck a guard rail and rolled over.
A 59-year-old woman, the driver and lone occupant of the vehicle, was transported to hospital where she was pronounced dead, OPP said.
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The deceased has not yet been identified while police inform her next of kin.
Eastbound lanes in the area will be closed for “several hours,” OPP said. A traffic detour is currently in place.
OPP collision investigators will probe the cause of the crash. Any witnesses are asked to call 613-270-9171.