The woman was crossing the road close to its junction with Belgrave Road at around 9.25am when she was in collision with a Nissan Micra.
She was airlifted to Leeds General Infirmary with serious injuries.
The road was closed until 1pm.
Any witnesses to the collision are asked to call North Yorkshire Police on 101, select option 2 and ask for Traffic Constable Dave Clayton or email email@example.com. Please quote incident number 88 of February 6,