In an effort to combat blight and lure businesses back downtown, the city's Community Redevelopment Agency undertook the Bunker Hill Redevelopment Project in 1955, a massive clearance project that leveled homes and cleared land for future commercial skyscraper development. This period saw the clearing and upzoning of the entire neighborhood, as well as the shuttering of the Angels Flight funicular railway in 1969. Angels Flight resumed operation in 1996 for a period of five years, shutting down once again after a fatal accident in 2001. On March 15, 2010, the railway once again opened for passenger service following extensive upgrades to brake and safety systems.