All lanes of southbound Interstate 280 are shut down in the Los Altos Hills area due to a crash, according to the California Highway Patrol.

Traffic is being diverted off at Magdalena Avenue, the CHP said.

It wasn’t immediately known when lanes would reopen.

Motorists were advised to use alternate routes.

> 🚨***TRAFFIC ALERT**** 🚨  >  > I280 southbound, near Magdalena Avenue, all lanes are blocked due to a traffic crash. Traffic will be diverted off to Magdalena Ave off-ramp. The estimated time for reopening is not yet available, please consider using alternate routes. pic.twitter.com/HkBFRqaUTa > — CHP Redwood City (@CHP_RedwoodCity) August 28, 2025

See Full Page