San Bruno, California major shopping centers, Bayhill (located on the old U.S. Navy property between San Bruno Avenue and Sneath Lane) and Tanforan. With final approval by the San Bruno City Council, construction proceeded on these major retail developments. Prior to these developments, most of the city's retail businesses were located on San Mateo Avenue and El Camino Real. San Bruno is one of two cities in the Bay Area that manages its own cable TV and internet system. The October 17, 1989, Loma Prieta earthquake (6.9 magnitude) caused some damage in the city. The U.S. Postal Service's Western Regional headquarters, then the
1989 Loma Prieta earthquake the normally crowded freeways contained unusually light traffic. If traffic had been normal for a Tuesday rush hour, injuries and deaths would certainly have been higher. The initial media reports failed to take into account the game's effect on traffic and initially estimated the death toll at 300, a number that was corrected to 63 in the days after the earthquake. After the 1989 Loma Prieta earthquake occurred, a group led by Antony C. Fraser-Smith of Stanford University reported that the event was preceded by disturbances in background magnetic field noise as measured by a sensor placed in Corralitos, California,