Unified Interior Regions

California

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Image: Support Column of Bridge
October 17, 1989

Support Column of Bridge

Support column of bridge across Struve Slough, Highway 1. Enlargement of hole where support enters the ground is an effect of lateral shaking, which caused the concrete to break up where the column joined the bridge and was instrumental in the roadbed collapse.

Image: Aerial View of Highway
October 17, 1989

Aerial View of Highway

Aerial view of collapsed sections of the Cypress viaduct of Interstate Highway 880.

Image: Aerial View of Large Slides
October 17, 1989

Aerial View of Large Slides

Aerial view of large slides north of Fort Funston. A ground perspective of this slide is shown in photo 33.

Image: Car Crushed by Brick
October 17, 1989

Car Crushed by Brick

Vehicle crushed by collapse of unreinforced-brick masonry.

Image: Landslide Debris on Highway
October 17, 1989

Landslide Debris on Highway

Landslide debris blocks both eastbound lanes of Highway 17 near Summit Road.

Image: Landslide-Displaced Trees
October 17, 1989

Landslide-Displaced Trees

Landslide-displaced trees reflect earthquake-triggered slope failure along coastal bluff, New Brighton Beach area, Santa Cruz County.

Image: Fructure Cuts Roadbed
October 17, 1989

Fructure Cuts Roadbed

A fracture cuts the roadbed, curbs, and railings on the collapsed section of Highway 1 at Struve Slough.

Image: Reinforcement Bars of Cypress Viaduct
October 17, 1989

Reinforcement Bars of Cypress Viaduct

Reinforcement bars exposed at the base of the Cypress viaduct near 14th Street.

Image: Aerial View of Slide
October 17, 1989

Aerial View of Slide

Aerial view of slide at Daly City. This is the largest slide triggered by the earthquake in San Mateo County, displacing approximately 36,700 cubic meters (48,000 cubic yards) of material. The base is about 152 me (500 ft) across at its widest point.

Image: Failure of Porch
October 17, 1989

Failure of Porch

Failure of porch on frame house.

Image: Landslide Debris on Highway
October 17, 1989

Landslide Debris on Highway

Landslide debris blocks both eastbound lanes of Highway 17 near Summit Road. Foreground material is damaged lane separators.

Image: Liquefaction in Deposits of River
October 17, 1989

Liquefaction in Deposits of River

Liquefaction in recent deposits of the Pajaro River formed these sand volcanoes along extensional fissures in a field prepared for autumn planting near Pajaro, across the Pajaro River from Watsonville. Furrows are spaced about 1.2 m (4 ft) apart.