State Route 1 also enters San Francisco from the north via the Golden Gate Bridge and bisects the city as the 19th Avenue arterial thoroughfare , joining with Interstate 280 at the city 's southern border . Interstate 280 continues south from San Francisco , and also turns to the east along the southern edge of the city , terminating just south of the Bay Bridge in the South of Market neighborhood . After the 1989 Loma Prieta earthquake , city leaders demolished the Embarcadero Freeway and a portion of the Central Freeway , converting them into street-level boulevards
1989 Loma Prieta earthquake
1989 Loma Prieta earthquake
San Francisco