The freeway originally featured a 3x2x2x3 arrangement with the inner two carriageways both running in the same direction during peak times. The changeover process was slow both on the freeway and the Harbour Bridge, with large numbers of red plastic 'candle sticks' or 'candy bars' being manually moved four times every weekday. The original north termination point of the freeway was Chandos Street, Cammeray; with a small extension being added to Willoughby road in 1978. The Chandos Street ramps were moved to Brook Street at this time.