Massive Sinkhole San Francisco Explained



Nature occasionally reminds us of its power when we push its limits. In San Francisco, a colossal sinkhole made an unexpected appearance near the intersection of Fillmore and Green streets. This unexpected event, triggered by a water main break, disrupted traffic, affected Muni lines, and flooded nearby homes. Let’s delve deeper into what happened and its impact on the city.


The Emergence of the Sinkhole

A water main, dating all the way back to 1949, ruptured, causing a massive sinkhole to form in the heart of San Francisco. This surprising event occurred at the intersection of Fillmore and Green Streets, a mere six-minute drive from the famous Golden Gate Bridge. The consequences were significant, with flooding affecting numerous homes and businesses, along with severe traffic disruptions, particularly on Fillmore Street between Green and Union Streets.


Efforts to Restore Normalcy

The San Francisco Public Utilities Commission (SFPUC) swiftly responded to the crisis. They reported that PG&E was on the scene to isolate a gas main within the work area. After completing their gas-related tasks, the crews aimed to resume work on repairing the water mains. The main culprit, a 16-inch cast-iron water main dating back to 1949, required extensive repair work.


Sinkhole Dimensions

The sinkhole measures approximately 20 feet wide and 10 feet deep, making it a substantial challenge for repair crews. Despite their tireless efforts, the disruption caused by this sinkhole is anticipated to persist for at least a week.


Impacts on San Francisco

The emergence of the sinkhole halted ongoing work in the vicinity. Its floodwaters affected not only residences but also local businesses. Moreover, the traffic situation worsened significantly, with Fillmore Street being closed off between Green and Union Streets.

The repair crews are committed to restoring water services promptly. They are currently in the area, diligently cleaning up debris from the streets, preparing to tackle the massive sinkhole.



The massive sinkhole in San Francisco serves as a reminder of the unpredictable power of nature. In the midst of this unexpected event, city officials and dedicated repair crews are working tirelessly to mitigate the damage and restore normalcy to the affected areas. As the city unites to address this challenge, it underscores the resilience and determination of the community in the face of adversity.