When opened, monthly lifting of the centre span was carried out for testing purposes. When the bridge was made a rail and road bridge, the span was always kept down unless enquired by river traffic. By 1930, river traffic declined, and so by 1944, the monthly lifting was altered to yearly. In 1951, it was proposed to keep the span closed, the last lift for river traffic being in 1933, and no maintenance lifting having been carried out for a decade. In September 1977, both state governments agreed to keep it fixed, and removed requirement for being able to lift it. Easter 1995 celebrations including operation of the lift span.
