One dead, four hurt after car falls from 18th Street overpass

A car leaving the 18th Street overpass and landing on Interstate 280 turned a quiet stretch between Potrero Hill and Dogpatch into a fatal emergency before dawn Friday. One person died after the vehicle caught fire, four others survived, and southbound I-280 did not reopen until shortly after 7 a.m. as California Highway Patrol investigators worked to piece together what happened.

The crash happened just before 12:20 a.m., when a vehicle carrying five people went off the 18th Street overpass and dropped into the southbound lanes of I-280, according to the California Highway Patrol. The impact sparked a fire. Four people were able to get out of the vehicle, but one occupant became trapped inside and died at the scene.

The four survivors were taken to a hospital and were recovering, CHP said. Authorities urged drivers to avoid the area while the investigation continued, and the cause of the crash remained under investigation. The collision forced a major overnight shutdown on a freeway that serves not only regional traffic but also thousands of daily trips into and out of the city’s southeastern neighborhoods.

The location sharpened the safety question for residents of Potrero Hill and Dogpatch, who know the 18th Street overpass as a connector above one of San Francisco’s busiest transportation corridors. A vehicle falling from that span onto I-280 is the kind of crash that raises immediate questions about barriers, roadway design and whether the overpass and freeway geometry can absorb a catastrophic failure or prevent one from becoming fatal.

The incident also comes against a broader citywide traffic safety picture that remains troubling. SFMTA’s crash report shows fatal crashes in San Francisco rose 21 percent in the five years after the pandemic compared with the five years before, while injury crashes fell 16 percent. That divergence suggests that while fewer crashes are causing injuries overall, the city is still seeing more severe outcomes when things do go wrong.

For commuters heading through the Potrero Hill, Dogpatch and Mission Bay edge of the city, the morning closure was a reminder of how quickly one crash on an elevated crossing can ripple outward. Southbound I-280 reopened after daylight returned, but the questions raised by the fatal plunge remained.