A multi-vehicle crash was backing up traffic on Highway 101 in San Luis Obispo Friday afternoon.
It happened at about 4:10 p.m. in the southbound lanes near the Los Osos Valley Road offramp.
![](https://ksby.com/wp-content/uploads/sites/2/2019/04/HWY-101-CRASH.jpg)
The California Highway Patrol reports three to four vehicles involved.
No word on the extent of any injuries but CHP reports an ambulance was requested at the scene.
By 4:20 p.m., traffic was backed up to the Marsh Street exit.