Golden Gate Bridge
Study initiated immediately after 1989 earthquake. Need to retrofit for earthquakes of Richter magnitude 7 or above. Phase 1 1997-2002 – strengthening together with installing of isolator bearings, expansion joints. 4 support towers replaced during continuous traffic flow. Phase 2 2001-2008 – replacing support towers, anchorage housing plus new shear walls, installing isolation bearings and […]
