The bridge was completed in 1924. During an indepth inspection of four panels of the main cables in 1991, numerous wires were found broken due to stress corrosion cracking and it was decided rehabilitate the cables by unwrapping, oiling and rewrapping them. It was observed that the broken wire ends were moving further apart as the wedging and oiling progressed - an indeication that the broken wires were slipping.. Immidiate action was taken to stabilize the backstay with clamping bands. The southwest backstay continues to be monitored by acoustic monitors that can detect breaking wires. As an interim measure, the severe damaged section of the main cables, the southwest backstay, is currently being reinforced by the addition of supplemental structural strands that will be connected to the existing cabble saddle and tower steel and to a new anchor frame on a new concrete block foundation anchored to bedrock with high-capacity rock anchors and structural strands