Bryan Reithaug pleaded guilty to operating a vehicle with over 80 milligrams of alcohol in his blood.
The taxi driver suspected the man was intoxicated and called police, who found him sitting in his truck.
A breath test found his blood-alcohol level was three times the legal limit.
The man, a heavy equipment operator, has four past drunk driving convictions, which took place from 1976-1985.
Defence lawyer Peter Fuglsang suggested that Judge Michel Bourassa consider this his first offence because the convictions are dated.
No way, said Bourassa.
"To treat it as a first time offence would be blindness."