One woman died and another was seriously injured after their car was crushed by a 35-tonne digger which fell from a low loader.
The driver was airlifted to Raigmore Hospital, Inverness
The accident happened at the Tomich junction of the A9 between Alness and Tain at about 1800 BST on Wednesday.
Christina Fraser, 24, from Garstein, near Tain, sustained fatal injuries, while the car's driver was airlifted to Raigmore Hospital, Inverness.
The road was closed for five hours. Police have launched an investigation.
A spokesman for Northern Constabulary said the car was struck by the digger as it was being transported across the carriageway.
The condition of the 45-year-old driver from the Embo area, who has not been named, has been described as comfortable.
Police are appealing for witnesses to the accident.