In 1995, a broken sewer line and heavy rain opened a 250-foot-wide San Francisco sinkhole that swallowed a three-storey Tudor house, trees and utility poles

In December 1995, a mighty storm wreaked havoc in San Francisco’s Sea Cliff, leading to the rupture of a century-old sewer pipe. This catastrophic event resulted in a large sinkhole that engulfed an unoccupied house. The city’s aging infrastructure is proving inadequate for today’s increased stormwater needs. Engineers have flagged the area as prone to swift ground failure, prompting ongoing efforts in San Francisco’s multi-billion dollar sewer upgrade initiative.
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