The passenger in the crash on the 405 has died in hospital.
The OPP says 74-year-old Gilbert Dunk of Burlington was taken to hospital with life-threatening injuries on Wednesday afternoon.
The single vehicle crash happened in the U.S. bound lanes at the Queenston-Lewiston bridge.
Seventy-three-year-old Alan Ashton of Burlington was driving the vehicle.
He was also killed.
Police are sending their condolences to the victims families.

Painting Honours Kristen French
Keeping Douglas Memorial Public is Goal: Mayor
Tourism Awards Received in Niagara
Man Charged with Defrauding Senior
Belugas at Marineland Holding....
NDP Leader Stops in Niagara
Region Finds Potential Budget Savings
Man Killed in Tent Fire