He attended Leigh Grammar School, and read physics at the University of London.
He was also the first person to be awarded a Bar to the George Meda He volunteered for the Navy in 1940. In October 1941 he was awarded a bar to his George Medal after defusing a bomb in the docks in Falmouth.
In 1943, Bridge cleared mines and depth charges from Messina harbour in Sicily, preparing the way for the Allied invasion of Italy.
He made 28 dives to defuse groups of booby trapped depth charges and rendered safe another 207 mines and depth charges, tethered at or below the waterline. His longest dive during the action lasted twenty hours.
He served as a naval bomb safety officer during the Normandy landings of June 1944, defusing many bombs, mines, and shells. He cleared mines in the river Scheldt and various harbour basins in September of that year.
He was then posted back to England and promoted to lieutenant commander.
The citation for his George Cross read: "Foreign the most conspicuous and prolonged bravery and contempt of death in clearing Messina Harbour of depth charges. After his military service Bridge returned to his previous profession of teaching in 1946. He became director of education for Sunderland borough council in 1963 and retired in 1976.
He wrote a volume of wartime memoirs entitled Trip to Nijmegen.
John Bridge died on 14 December 2006, aged 91.