In 1979, the Northern Motorway was extended northward to Sunset Road, near the present Upper Harbour Highway interchange. The motorway ended at a set of traffic lights on the top of a hill, giving limited visibility to motorway traffic. In 1984 a two-lane expressway opened, continuing from Sunset Road to Greville Road and on towards Albany Highway Albany Village. On 30 March 1984, the last tolls were collected for the Harbour Bridge, making the entire Northern Motorway free of charge from 31 March 1984.