What freeway collapsed the Northridge earthquake?

A bulldozer tears down a section of the Santa Monica Freeway that collapsed during the Northridge earthquake, on Jan 19. Vehicles are left crushed under the Northridge Meadows apartment complex on Jan. 17.

How many freeway bridges collapsed during the Northridge earthquake?

Seven years later, the San Fernando earthquake damaged more than 60 bridges on the Golden State Freeway in California. This earthquake cost the state approximately $100 million in bridge repairs.

What fault line is Northridge on?

1994 Northridge earthquake

Where was the epicenter of the 1994 Northridge earthquake?

San Fernando Valley

The earthquake occurred just after 4:30 am local time along a previously undiscovered blind thrust fault in the San Fernando Valley. Its epicentre was in Northridge, a suburb located about 20 miles (32 km) west-northwest of downtown Los Angeles.

How did the 1994 Northridge earthquake happen?

The Northridge earthquake was caused by dip slip on a thrust fault—the overriding movement of one crustal block up and over a second crustal block (see p. 1 1)—that dips down to the south-southwest beneath the northern San Fernando Valley.

What fault was the 1994 Northridge earthquake?

thrust faults

Northridge California Earthquake 1994 Summary
The thrust faults along which the 1971, 1987, and 1994 earthquakes occurred are the result of a big bend in the San Andreas fault. The bend causes crumpling, or “compression” of the Earth’s crust nearby, giving rise to the thrust faults.

When did the bridge collapse in Los Angeles?

On March 8, 1924, a Los Angeles Times story reported: The old Avenue 26 bridge, spanning the Arroyo Seco, collapsed with a terrific roar shortly after 3 p.m. yesterday, hurling an unidentified man to his death.

Which bridge collapsed in California?

The Golden Gate bridge collapsed during the 1906 San Francisco earthquake. Afterward, engineers studied the bridge’s failure and concluded that it was due to high winds.

What year did the bridge collapse in California?

1989

Silhouette of part of the Bay Bridge connecting San Francisco and Oakland. A section of the Bay Bridge’s upper deck collapsed during an earthquake that struck the San Francisco area on October 17, 1989, requiring lengthy repair (see San Francisco earthquake of 1989).

What bridge collapsed in Loma Prieta?

The worst disaster of the earthquake was the collapse of the double-deck Cypress Street Viaduct of Interstate 880 in West Oakland. The failure of a 1.25-mile (2.0 km) section of the viaduct, also known as the “Cypress Structure” and the “Cypress Freeway”, killed 42 and injured many more.

What was the epicenter of the Loma Prieta earthquake in 1989?

On October 17, 1989, at 5:04:15 p.m. (PDT), a magnitude 6.9 earthquake severely shook the San Francisco and Monterey Bay regions. The epicenter was located near Loma Prieta peak in the Santa Cruz Mountains, approximately 14 km (9 mi) northeast of Santa Cruz and 96 km (60 mi) south-southeast of San Francisco.

What bridge collapsed in the Loma Prieta?

San Francisco-Oakland Bay Bridge

Her story and her life changed in 15 seconds. At 5:04 p.m., the Loma Prieta earthquake shook with such violent force it tore the San Francisco-Oakland Bay Bridge in two while she and her crew were crossing it.

Has Golden Gate Bridge collapsed?

The Golden Gate bridge collapsed during the 1906 San Francisco earthquake. Afterward, engineers studied the bridge’s failure and concluded that it was due to high winds.

What bridge collapsed in San Francisco earthquake?

The collapse of the Cypress Street Viaduct (Nimitz Freeway) caused most of the earthquake-related deaths. The San Francisco–Oakland Bay Bridge was also damaged when a span of the top deck collapsed. In the aftermath, all bridges in the area underwent seismic retrofitting to make them more resistant to earthquakes.

Why did Interstate 880 collapse during the earthquake?

On October 17, 1989, the portion of the structure from 16th Street north all the way to the MacArthur Maze collapsed during the 1989 Loma Prieta earthquake, due to ground movement and structural flaws.

What happened to the Nimitz Freeway?

On October 17, 1989, a major portion of the double-decker section of the Nimitz Freeway known as the Cypress Structure collapsed during the Loma Prieta Earthquake, killing 42 people.

What replaced the Cypress Freeway?

The road connected I-880 with I-80 and the Bay Bridge, and has now been replaced by surface freeway that does the same.

Where did the Nimitz Freeway collapse?

One of the most tragic sights created by the Loma Prieta earthquake of Oct. 17, 1989, was the collapse of the double-deck Nimitz Freeway (the Cypress Street Viaduct on Interstate 880) just south and east of the San Francisco-Oakland Bay Bridge in Oakland.

Was the Cypress Street Viaduct rebuilt?

It took nine years and $1.2 billion dollars to rebuild the Cypress Freeway. The new freeway is not a double-decker, and it was constructed using the latest technology and very high standards for seismic design. West Oakland residents got what they wanted, and those involved learned a lot along the way.

How many people died in Nimitz Freeway collapse?

42 people

– The city of Oakland commemorated the 42 people who died on the collapsed Cypress freeway, when the magnitude 6.9 Loma Prieta earthquake struck 30 years ago today.

What part of the Bay Bridge collapsed in 1989?

Cypress Viaduct

On October 17,1989, the Loma Prieta Earthquake struck northern Cali- fornia, causing the collapse of a two-level, 1.25-mile-long section of the Cypress Viaduct on Interstate Route 880 in Oakland; 42 people were killed.

Did the Loma Prieta earthquake cause a fire?

Shortly after the Loma Prieta earthquake devastated northern California in 1989, a fire broke out in a structure located in the prestigious Marina District of San Francisco. The fire destroyed a few structures that had just suffered the magnitude 7.1 earthquake, leaving many homeless.

How big was the earthquake just now in Oakland?

Magnitude 3.3 earthquake reported in Oakland.

What was the biggest earthquake in California?

​​California’s Largest Recorded Earthquakes Since 1800, Ranked by Magnitude​

Which two states have the least number of earthquakes?

Florida and North Dakota are the states with the fewest earthquakes. Antarctica has the least earthquakes of any continent, but small earthquakes can occur anywhere in the World.

What state has the most earthquakes?

Alaska

Alaska is the champion when it comes to the frequency of earthquakes. Alaska outranks California and every other state in the number of quakes and greatest magnitude achieved.