Empress Theatre (California) repainted and the "Empress Theatre" sign was painted into the pediment. Its window panels were uncovered and refurbished, seats from Fox Theatres were salvaged and installed, gypsum decoration was re-gilded, and period-appropriate carpeting was laid. The Empress thrived throughout the decade. 1989 On Tuesday October 17, the Loma Prieta earthquake, measuring 6.9 on the moment magnitude scale, shook the San Francisco Bay Area; the Empress Theatre was not spared. To repair damage from the quake and make the building seismically safe for use was a task so monumental that it caused the theatre to sit vacant and derelict for nearly
1989 Loma Prieta earthquake was built on was filled marshland, and half was somewhat more stable alluvium. Because of new highway structure design guidelines—the requirement of ductile construction elements—instituted following the 1971 San Fernando earthquake, a limited degree of earthquake reinforcement was retrofitted to the Cypress Viaduct in 1977. The added elements were longitudinal restraints at transverse expansion joints in the box girder spans, but no studies were made of possible failure modes specific to the Cypress Viaduct. When the earthquake hit, the shaking was amplified on the former marshland, and soil liquefaction occurred. During the earthquake, the freeway buckled and twisted before the