On 25 March 1992, Bianchini was appointed by
Pope John Paul II to succeed
Barry Hickey, who had been appointed Archbishop of Perth a year earlier, as the eighth Bishop of Geraldton. He was ordained and installed by Archbishop Hickey on 19 May 1992. During his episcopacy, he established the Parish Life and Mission Office in a newly built premises alongside the Parish office of the
St Francis Xavier's Cathedral. In the final 10 years of his episcopacy, he was responsible for spearheading the Cathedral Precinct Project to restore and enhance the historic St Francis Xavier Cathedral and its surrounds. In February 2015, Bianchini wrote to Pope Francis, advising he would reach the canonical age of retirement of 75, in 2016. His resignation was accepted on 15 May 2017 and Michael Morrissey was appointed to succeed him. He was the longest serving bishop in the history of the Diocese of Geraldton. He retired to Perth to be closer to his surviving siblings and family. ==References==