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InterContinental Mark Hopkins Hotel: Retaining Wall

  • Northern California

The grounds of San Francisco’s historic Intercontinental Mark Hopkins hotel contain a basalt and granite retaining wall that dates to 1878 and enclosed the former Hopkins mansion on the site. As the only site feature to survive the 1906 earthquake, the wall was incorporated into the hotel’s design in 1926. Today, a significant portion of the original wall remains intact and the site is a California Historical Landmark. ARG was brought in to seismically strengthen the wall and designed a non-intrusive solution. Through strategic core drilling and bracing, most of the structural elements are imperceptible and the wall has retained its design integrity.