OAKLAND, CA - OCTOBER 15: In this before-and-after composite image, (Top) The collapsed upper deck of the Cypress viaduct of Interstate 880 after the Loma Prieta earthquake on October 17, 1989 in Oakland, California. (Photo by H.G. Wilshire/U.S. Geological Survey Photographic Library via Getty Images) OAKLAND, CA - OCTOBER 15: (Bottom) A car drives along Mandela Parkway where the Cypress viaduct of Interstate 880 used to stand on October 15, 2014 in Oakland, California. It has been 25 years since the 7.0 Loma Prieta earthquake rocked the San Francisco Bay Area at 5:04PM on October 17, 1989 causing widespread damage to buildings and roadways. 63 people died and nearly 4,000 were injured. (Photo by Justin Sullivan/Getty Images)
Bay Area Then And Now
SAN FRANCISCO, CA - OCTOBER 15: In this before-and-after composite image, (Top) A view of damaged homes along Divisadero Street following the Loma Prieta earthquake on October 17, 1989 in San Francisco, California. (Photo by G. Plafker/U.S. Geological Survey Photographic Library via Getty Images)
OAKLAND, CA - OCTOBER 15: (Bottom) A view looking north on Divisadero Street on October 15, 2014 in San Francisco, California. It has been 25 years since the 7.0 Loma Prieta earthquake rocked the San Francisco Bay Area at 5:04PM on October 17, 1989 causing widespread damage to buildings and roadways. 63 people died and nearly 4,000 were injured. (Photo by Justin Sullivan/Getty Images)
Bay Area Then And Now
SAN FRANCISCO, CA - OCTOBER 15: In this before-and-after composite image, (Top) An apartment builing on the corner of Beach and Divisadero is seen shored up after the Loma Prieta earthquake struck on October 17, 1989 in San Francisco, California. (Photo by FEMA News Photo via Getty Images)
SAN FRANCISCO, CA - OCTOBER 15: (Bottom) Apartment buildings built after the 1989 Loma Prieta earthquake stand on the corner of Beach and Divisadero on October 15, 2014 in San Francisco, California. It has been 25 years since the 7.0 Loma Prieta earthquake rocked the San Francisco Bay Area at 5:04PM on October 17, 1989 causing widespread damage to buildings and roadways. 63 people died and nearly 4,000 were injured. (Photo by Justin Sullivan/Getty Images)
Bay Area Then And Now
SAN FRANCISCO, CA - OCTOBER 15: In this before-and-after composite image, (Top) A worker surveys the damage caused by the fire in San Francisco's Marina District after the Loma Prieta earthquake struck on October 17, 1989 in San Francisco, California. (Photo by FEMA News Photo via Getty Images)
SAN FRANCISCO, CA - OCTOBER 15: (Bottom) A man waits for a bus on the corner of Beach and Divisadero on October 15, 2014 in San Francisco, California. It has been 25 years since the 7.0 Loma Prieta earthquake rocked the San Francisco Bay Area at 5:04PM on October 17, 1989 causing widespread damage to buildings and roadways. 63 people died and nearly 4,000 were injured. (Photo by Justin Sullivan/Getty Images)
Bay Area Then And Now
SAN FRANCISCO, CA - OCTOBER 15: In this before-and-after composite image, (Top) A view of the doorway to a damaged apartment building on Beach Street near Divisadero Street following the Loma Prieta earthquake on October 17, 1989 in San Francisco, California. (Photo by C.E. Meyer/U.S. Geological Survey Photographic Library via Getty Images)
SAN FRANCISCO, CA - OCTOBER 15: (Bottom) A view of a garage at an apartment building on Beach Street that was built after the 1989 Loma Prieta earthquake on October 15, 2014 in San Francisco, California. It has been 25 years since the 7.0 Loma Prieta earthquake rocked the San Francisco Bay Area at 5:04PM on October 17, 1989 causing widespread damage to buildings and roadways. 63 people died and nearly 4,000 were injured. (Photo by Justin Sullivan/Getty Images)
Search and rescue support workers Tim Sc
Search and rescue support workers Tim Schilwachder (L) and Mamdouch Shabaan embrace 21 October 1989 by the Cypress Structure above 28th and Cypress Sts, shortly after a man was rescued alive there. A powerful earthquake has rocked San Francisco 17 October killing nine people and injuring hundreds. The epicentre of the quake, which measured 6.9 on the Richter scale, is thought to have been Loma Prieta, 10 miles north of Santa Cruz on the San Andreas fault. AFP PHOTO CHRIS WILKINS (Photo credit should read CHRIS WILKINS/AFP/Getty Images)
Wreckage of the Cypress Freeway
The remains of the Cypress Freeway, which ran through the center of Oakland, following the San Francisco, or Loma Prieta, Earthquake of 1989. Although the quake occurred in 1989, this portion of the Interstate freeway I-880 was not rebuilt and reopened until 1997. The freeway literally collapsed like a house of cards. Although the quake hit at 5:04 P.M. on a weekday, amazing only 42 people were buried and killed by the falling roadway. (Photo by Jim Sugar/Corbis via Getty Images)
Cypress Freeway After the Loma Prieta Earthquake
Cypress Freeway After the Loma Prieta Earthquake (Photo by �� Lloyd Cluff/CORBIS/Corbis via Getty Images)
San Francisco Earthquake 1989
Loma Prieta earthquake October 17, 1989 (Photo by Mark Downey Lucid Images/Corbis via Getty Images)
Rescue Workers Pulling Car from Collapsed Bridge
(Original Caption) Rescue workers pull up car which was perched over section of bridge which collapsed in earthquake.
Bay Area Then And Now
SAN FRANCISCO, CA - OCTOBER 15: In this before-and-after composite image, (Left) Cars are seen covered in bricks from a falling building facade following the Loma Prieta earthquake on October 17, 1989 in San Francisco, California. (Photo by C.E. Meyer/U.S. Geological Survey Photographic Library via Getty Images)
SAN FRANCISCO, CA - OCTOBER 15: (Right) Cars are parked along 6th Street near Townsend on October 15, 2014 in San Francisco, California. It has been 25 years since the 7.0 Loma Prieta earthquake rocked the San Francisco Bay Area at 5:04PM on October 17, 1989 causing widespread damage to buildings and roadways. 63 people died and nearly 4,000 were injured.
Loma Prieta, California, Earthquake October 17, 1989, Collapsed Section Of The San Francisco-Oakland Bay Bridge, View Is West.
Loma Prieta, California, Earthquake October 17, 1989, Collapsed Section Of The San Francisco-Oakland Bay Bridge, View Is West. (Photo by Education Images/UIG via Getty Images)
Loma Prieta, California, Earthquake October 17, 1989, Structures Damaged In The Marina District Of San Francisco, The First Story Of This Three-Story Building Was Damaged Because Of Liquefaction; The Second Story Collapsed, What Is Seen Is The Third
Loma Prieta, California, Earthquake October 17, 1989, Structures Damaged In The Marina District Of San Francisco, The First Story Of This Three-Story Building Was Damaged Because Of Liquefaction; The Second Story Collapsed, What Is Seen Is The Third Story. (Photo by Education Images/UIG via Getty Images)
Caltrans workers carry materials to be u
Caltrans workers carry materials to be used as reinforcement of the quake-ravaged Cypress Structures on Interstate 880 22 October 1989 in San Francisco after a quake erupted 17 October in San Francisco Bay Area, killing an estimated 273 people and doing USD 1 billion-worth of damage. It was 5.04 pm local time when the earthquake, measuring 6.9 on the Richter scale, struck. Homes and offices were wrecked, fires broke out and vital service were cut off. Most of the deaths came when a half-mile part of the double-decker Interstate 880 highway collapsed, crushing vehicles on the lower deck. The last major earthquake hit San Francisco in 1906, when 2000 people died. (Photo credit should read CHRIS WILKINS/AFP/Getty Images)
Photo shot 22 OCT 89 shows a collapsed p
Photo shot 22 OCT 89 shows a collapsed portion of the Bay Bridge at Oakland after the earthquake that rocked northern California. (Photo credit should read GARY WEBER/AFP/Getty Images)
The front of an apartment building in th
The front of an apartment building in the Marina District in San Francisco is ripped off 21 October 1989 October 1989 after a quake erupted 17 October, killing an estimated 273 people and doing USD 1 billion-worth of damage. It was 5.04 pm local time when the earthquake, measuring 6.9 on the Richter scale, struck. Homes and offices were wrecked, fires broke out and vital service were cut off. Most of the deaths came when a half-mile part of the double-decker Interstate 880 highway collapsed, crushing vehicles on the lower deck. The last major earthquake hit San Francisco in 1906, when 2000 people died. (Photo credit should read JONATHAN NOUROK/AFP/Getty Images)
Supporting Buildings After an Earthquake
Supporting Buildings After an Earthquake (Photo by �� Lloyd Cluff/CORBIS/Corbis via Getty Images)
Cranes surround the Cypress Structure on
Cranes surround the Cypress Structure on Interstate 880, 19 October 1989 in San Francisco, following the earthquake estimated at 6.9 on the Richter scale that rocked California 17 October 1989. (Photo credit should read WEBER/AFP/Getty Images)
Rescuers Carrying Victim
(Original Caption) Oakland, California: Rescue workers remove, October 19, one of the victims crushed to death in their cars as the Cypress section of Interstate 880 collapsed, October 17, during the earthquake that rocked the Bay area.
Cypress Freeway After the Loma Prieta Earthquake
Cypress Freeway After the Loma Prieta Earthquake (Photo by �� Lloyd Cluff/CORBIS/Corbis via Getty Images)
World Series - Oakland Athletics v San Francisco Giants - Game Three
OAKLAND, CA - OCTOBER 18: A general view of the freeway in Oakland after the Loma Prieta earthquake hit prior to World Series game three between the Oakland Athletics and San Francisco Giants on October 18, 1989 at Candlestick Park in San Francisco, California. The game was postponed for 10 days. (Photo by Rich Pilling/Getty Images)
Picture dated 18 October 1989 in San Fra
Picture dated 18 October 1989 in San Francisco of a collapsed house that crushed a car parked on the street in the Marina District during a quake that hit the city 17 October, killing an estimated 273 people and doing USD 1 billion-worth of damage. It was 5.04 pm local time when the earthquake, measuring 6.9 on the Richter scale, struck. Homes and offices were wrecked, fires broke out and vital service were cut off. Most of the deaths came when a half-mile part of the double-decker Interstate 880 highway collapsed, crushing vehicles on the lower deck. The last major earthquake hit San Francisco in 1906, when 2000 people died. (Photo credit should read ADAM TEITELBAUM/AFP/Getty Images)
A military policeman steps over a police
A military policeman steps over a police line on October 18, 1989, in front of a heavily-damaged building in the Marina District of San Francisco, one of the areas hardest hit in the city by an earthquake estimated at 7.0 on October 17, 1989. (Photo credit should read ADAM TEITELBAUM/AFP/Getty Images)
Cars Crushed in an Earthquake
A car crushed under bricks at the corner of 6th and Townsend in San Francisco, after the 1989 earthquake. Three people died in this accident. (Photo by Roger Ressmeyer/Corbis/VCG via Getty Images)
Quake-Damaged Apartment House
A Marina District apartment building that was heavily damaged in the 1989 San Francisco earthquake. Police officers patrol the neighborhood to prevent looting. (Photo by Roger Ressmeyer/Corbis/VCG via Getty Images)
Earthquake Damage in San Francisco
Piles of loose bricks on a sidewalk in San Francisco's Marina District, after the Loma Prieta Earthquake of 1989. (Photo by Roger Ressmeyer/Corbis/VCG via Getty Images)
Collapsed Freeway
The collapsed Cypress Freeway in Oakland after the 1989 Loma Prieta earthquake. (Photo by �� Lloyd Cluff/CORBIS/Corbis via Getty Images)
Loma Prieta Earthquake Damage
A house collapsed on to a parked car during the 1989 Loma Prieta earthquake, San Francisco, California, October 17, 1989. Image courtesy J.K. Nakata/USGS. (Photo by Smith Collection/Gado/Getty Images).