A brief illustrated history of San Francisco freeway planning and construction. The city's truncated network is partly a result of the 1989 Loma Prieta earthquake, which led to demolition of two elevated expressways; but it was the Freeway Revolt of the 1950s and '60s, a citizen uprising, that prevented most of the original proposed system from ever being built, saved thousands of homes and businesses, and kept San Francisco from conversion into a typical, modern, auto-oriented American city.