June 24, 1980: Twelve-foot-high fences designed to discourage suicides were erected during the summer along both sides of the Bourne Bridge over the Cape Cod Canal. Similar work was done on the Sagamore Bridge. Since the police began keeping records of suicides in 1963, 53 people had jumped to their deaths from the bridges, 70 others had threatened to leap, and eight had survived suicide attempts by 1980. Signs saying